Need help on Engine infomation+Tuning

Hi,

i was wondering if my engine is a stage 3 vtec not just vtec-e because i have a Civic 1.5LSi Vtec and its a HB EK3 and the engine code is D15Z6, i know it has an economic mode when i drive in third/fourth/fith below 2.5k but above that it goes into normal mode and then at 4.8k-5k then engine becomes much faster like a normal SOHC vtec. The thing is that i compare the engine with the engine D16Z6 which is a SOHC VTEC now my engine is the same but 100cc less and the bonus of VTEC-E if so my car is a hybrid VTEC or STAGE 3 vtec? i am tired of looking around for info but no luck my car has 114bhp stock can anyone help me???????????

Also i plan to modify it and have the following installed over the next month AEM v2, Nology Leads&Plugs, FSE Boost valve, Ecotek Valve, S/S Supersprint 4-2-1 mainfold + straight through exhaust + no Catalict convertor.

how Much power you think i will get with what i have mentioned and is it worth it ? Don't mention Engine swaps coz here in gibraltar that kind of stuff they don't do coz it costs the bomb, and no mechanics here are bothered + i don't have the cash.

Who in the hell told you about this shit stage 3 vtec? economic mode? All honda cars are economy cars therefore ALWAYS being economical. Its always in normal mode a car isnt retarded when it wants to be only when its broken. Your never going to find the info your looking for becuase I dont think it exists and the mods you listed your looking at like 5whp.

Yes i know all Hondas are economic, but the are some with vtec-e technology(the one that the green econo lights up on the dash when cruising below 2.5k in any gear above second) and some with 2-stage vtec and 3-stage vtec these are only on SOHC. I Just Want to know what type is mine cause different websites say different stuff.

Aslo i forgot that the gain with the mods i mentioned can't be 5hp
thats impossible , i had some with less mods than that (just a K&N filter and supersprint header with sporty exhuast) and he dynoed it and it was about 127BHP thats about 13HP

I was refering to wheel horsepower not base power and that green light you sure thats not your cruise control. I hate to break it to you but theres only one kind of vtec buddy they all do the same thing. Explain these so called stages could you please.

I didn't mean cruise control , i meant like going for ride (cruising) (riding at low rpms below 2.5k if you want the econo light to come on)

Here a website which shall explain the VTEC stages to you. I thought the same as you until i got to research the Stages of VTEC.

http://www.leecao.com/honda/vtec/index.html

I'm sorry but I find all of that to be false I dunno where you are from but it seems to be over seas but here in the states vtec is a big hype and being that its such a big hype and my uncle is a honda mechanic and I hang out at a speed shop it just amazes me how Ive never heard of such a thing that site is saying that vtec on dohc motors does one thing and then on a sohc does something else and then something else for another..... no vtec does the same thing for alll motors just using bigger cam lobes to sum it up I find all of that to be false. and driving under 2.5 rpm is totally dogging it real bad cruising rpms is 3 grand.

Its true i just spoken to a Local Honda Specialist he says there are several VTEC types. And if you want Econo mode you need to be below 2.5k. Anyway here in Gibralatar you won't go past 2k unless you're overtaking in the incoming traffic lane. lolol like me.

the thing is gibraltar is very small, i mean very very very small place.

Any Way do you Know what Civic i have is it a DX,CX,EX,VX,HX?

its a Honda Civic 1.5LSi VTEC (Year 1999) hatchback 3Doors (EK3)
Engine Code: D15Z6 (is it similar to D16Z6?)

The thing is when i try to order from USA i don't know how my civic is referred over thier.

one more thing, i have about £1250pounds i think thats about $2000
what parts can i order in order to improve my BHP?
Also is the 5bhp to the wheel noticeable?

well you say its a 1.5lsi we have a model here thats an si but its not on the 99 hatches just the coupe as for it being similar to a d16z6 yeah its just a point litre less. But to try and help you more do you have a sunroof, power windows,power door locks, did it come with cd player to cassette or just radio? Did it come with A/C? Basicly an EX has all of those things and the lower lines get less and less. We really dont go by base horsepower here its all about the wheel horsepower but 5 whp is noticable but when it comes to ordering stuff usually hatches have a category of there own like it will say 96-00 coupe and then be one for a hatch but who knows. Things to order would be your basics intake, header, exhaust, cam gear things like that.

Hi, sorry i taken long i've been off

ok my car has
(1493cc)1.5LSi year:1999 Sohc 16v VTEC 3 door hatchback
114BHP
Radio cassete player (pioneer) 45x4watts
two front speakers only
5 speed Manual Transmission
No sunroof
No Air Conditioner
Power Windows
Power Steering
Central locking
Immobilizer
Electric/Heated Mirrors
Rear Fog Lights
NO Front fog Lights
Driver and Passenger AirBags
NO ABS
Front Discs Brakes
Rear Drum Brakes
No Alloys
wheels size: 185/14/60R

i think thats about it! oh and the engine code is D15Z6 and its a EK3

Got bored, so I did a search.

There is stages to vtec, Well at least now there is (http://autozine.kyul.net/technical_school/engine/vvt_2.htm) I stopped payin attention to vtec along time ago. I didn't know they they made stages for the thing.
It seems that every link I found ended having the same stuff like whats in this link. Pretty much the same diagram and all that. eh:icon16:

SEE TOLD YOU SOOOOOO. BUT NOOOOOOOOO NOBODY LISTENED TO ME. well any way regarding to my other question, which is my car Civic Vx,EX,HX,DX,CX?????

I'm think you got an HX. But I'm not sure.

Nope its not an HX cause no HX has that engine code. Anyone ????? knows? IS THIS A SECRET HYBRID THAT HONDA MADE AND ONLY SOLD IT HERE?? IN GIBRALTAR!!!!!

Anyone??????????????????????????? Can Someone Help With My Question?????????????????????????????????????

driving under 2.5 rpm is totally dogging it real bad cruising rpms is 3 grand.

first of all the rpms that you cruise at varies with different cars. my car is designed to cruise well at about 2K rpms without bogging and i have a civic HX.
second of all I know it isnt an EX, HX, Dx because the Dx is non-vtec, the HX is vtec-e (i have this in my car and the car comes stock will alloy wheels) the EX is a stage 2 vtec. so there are different kinds of vtec, at least 2 kinds in the US. you might have the same engine as the cx or vx models but i'm not really sure. i believe they are 1.5 L but i dont think they have any vtec.
chances are that you have a car with an engine that isnt offered for sale in the US.

First of All my car has VTEC due to the fact the badge is stuck to the back from stock. Second the engine code is like the EX(D16Z6) but instead its a D15 not D16 just 100cc less. Also i can feel the vtec kick in about 4.8-5k and at 2.5k or below the economic green light lights up indicating the car in in econo mode, thus this proves that it had vtec-e (for low rpm )but also it seems to have vtec(for higher rpm). Today i just ordered my AEM V2 and i asked the guy who was selling it and he said that my car was an EX mini me, but no one has still provided me with enough infomation to confirm this. i am its like my car has the EX engine Z6 part and then just stuck a VTEC E D15 part!!! damn it i ust want to know which isss my car!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

i'd say thats a ex but civic hatches dont make ex they only have dx, vx and cx so did u buy ur car brand new or off of someone else? cuz u might have a motor swap in ur hatch just maybe i dunno.

just because it has a certain badge on it doesnt mean much. i've seen and heard of cars that are badged wrong or purposely badged differently. even if it looks like factory doesnt mean it is. its not too hard to repaint it or put a different badge on. happens all the time.
also i havent heard of cars having a stock vtec light. i've only heard of people adding them on their own.
your car could have a mini me swap. its the only way i could understand a 1.5 L engine having a vtec. my guess would be a 1.5 block with an ex head and then the car being badged as vtec. or it could just be a model not sold where i'm from.

Hello,

First of all: I'm new to this forum.

I came upon this topic through google.

Now for the topic.

What Civiclsi15 says is correct about the vtec-e and the econo light.
also he's correct about the 2500rpm thingy.

Let me explain:

This enginerange=>D15Z6, D15Z8 is known as the economic vtec's

they are 1.5l 16v with vtec.
they have 84kw or 114/115Bhp.

They could be nearly the same as the USDM D15Z (I don't know this for sure as i'm from belgium and i don't have the technical details from the D15Z engine.)

how they work.

the engine only uses 12valves when you are easy on the gas and stay beneath the 2500 rpm zone.
In 2nd,3rd, and 4th gear taht is.
In fifth gear they stay in te 12v mode(=econo=green light in console) until you reach the 120km/h mark.

also the Vtec kicks in @ 3800rpm and the redline is 7000rpm(could be 7100 also)

as far as I know this engine doesn't seem to be available in the US.
only in the EU regions

I hope that this info could be of some help in finding out which car you have.

If anyone of the americans on the forum here could lay his/her hand on some tech. info about the D15Z engine and you can/will send it to me you would have my everlasting thanks.

Because: the D15Z range of our EU models is NON tunable.
I mean there are no known parts for it.

So i'm trying to find as much info about the D15Z range as I can get.
Because I want (like most of us) more power.
(Engine swapping is NOT an option in belgium)

Love y'all

THANKS GOD !!! Someone in the same situation as me!
Well my friend let me say a few facts after i have research the entire Web. NO its not the same as the D15Z from USD. In the US they have
D15Z1,D15Z8 and some other but not the D15Z6, basically this is a hybrid VTEC i think its a two stage vtec similar to 3 stage but not as refined, Also this car is known as Civic EX because i just ordered a AEM V2 from a Honda specialist in UK and they told me that its a EX due to the Z6 part in the engine (i don't know if thats the block or head) and due to the the equipment, the thing is mine was bought custom (e.g no air con, no sunroof,no alloys) so it came cheaper but i spoke to the owner of the car and the car actually came with those things but she didnt won't them. I came across the 2 stage vtec when searching for parts, my car with the same engine code appeared and besides it said VTEC II and then another 1.5 but the D15Z1 had VTEC-E beside it. my conlclusion is that its a 1.5 with EX VTEC and vtec E as well. Also the vtec kicks in at 4.5-4.8 not 3.8. 3.8k is too low for vtec even in a Sohc.

Anyway baskeheurs if you have more info just msg me or post it here!
This Car is very weird and like no1 can find info on it. Also baskeheurs i heard the 0-100km is actually 9.7second not 10.2seconds. Doesn't the car feel fast to be 10.2? i mean for me its feels as its in the 9 ish seconds area wat do u think?

Civicsi1.5, where are you located? When you say Gibraltar, do mean around Africa? The motor you are describing sounds like one of the off motors we have in Germany that doesn't quite match anything in the states. Anyway the little green light is a shiftlight, you could call it an economy light or whatever, and yes the engine does sing in the higher RPM range, as it is a off shoot of the Z1 in the US VX, but you can't trust model names like Si,EX etc.. since they vary too much between countries. It may very well be the three stage vtec like in the JDM D15B, since that motor is know for it's economy and but is rated at 130ps, and you say it dyno'ed around 124whp which is about right for that motor with a couple mods. So it is probably just a D15B with a regional motor code that doesn't correspond with what is released in the states, or other places.

Hi ,
Yes gibraltar is located to the south of spain, but its a british colony.
The green light is econo mode i have the manual of the Car you know!
But i think you're right about the 3stage stuff. I just want to know why isn't there much info on it? i mean for a 1.5 litre its damn fast! fast than my Mitsubishi Galant 1.8 1993! i just curious because in this topic there are no real answers, just rumor speculation and personal thoughts i just whish i could get the guy who made my car and ask him some damn questions! Also i think its not entirely a proper a 3 stage due to it has only one solonoid unless the first part of the Vtec - e (below 2.5k) is control some other way which i think so! thats why i also said the stage II thing.

Hi there again.

I've done some research also in my books about honda engine's.

They've made the D15Z1,D15Z3 (both VTEC-E) and 90Bhp
then they've made the D15Z6,D15Z8 (both VTEC-E) and 114Bhp

all of these are 3stage VTEC's don't be fooled with the E.
The E only stand's for the 12 valve thing I explained earlier.

And be sure that the 3800 VTEC kick in is correct.
That's defenatly right.

Now what you were saying about the 2stage VTEC is in some way correct.
Honda has mede a block with 2 stage vtec also. with 1493 cc.
but that is an engine only produced in 5-door EU models.

You say that yours is an 3 door so it's surely an 1.5 VTEC-E.
with 3 stage VTEC and so on.

You say faster than 10.2!!
Could be in your case
Because I drive an 5-door civic which is heavier than the 3 door brother.

and even A 3 door 1.5 isn't (verry)fast.
Normally the 1.5 vtec's are economic thingy's like the american HF's.

They also reach their top speed in 4th gear.
So the fifth gear is pure economical.
That's the bad thing about these cars.
The gears are so long that the car loses much of it's "spark" when your flooring it.

I'm trying to find out which gearbox could fit under mine so I have a real 5-speed tranny. (now they are 4gear with an 5thfor saving fuel.)

hope this helped some more.



love y'all
PROUD MEMBER OF HONDA CLUB BELGIUM

the D15Z1,D15Z3 (both VTEC-E) and 90Bhp is only vtec -e
but the D15Z6 is surely VTEC-E and VTEC isn't it?
And 114bhp for a 1.5 is good also i found on Autosport magazine that my car is 0-100km in 9.7seconds, above in this forum you see all the mods i have or being done at the moment well i know a gain with a DC DAC intake and the same supersprint header and exhuast and nology leads, with the same engine code as me and he got 215km/h and he said he could push it a little more probraly 2 0r 3 km more. Yes i have noticed that they have longish gears. And i think mines EU model i think.
And are you sure its a 3 stage vtec? got evidence? articles with reference to D15Z6?

Thans for your help!

evidence of the 3 stage VTEC.

only what my dealer says. but they know their cars well tough.

Also the ones with 2 stage Vtec are called VTEC-II. only made in '97 and '98

They are also 1493cc

difference between the 90 and 115Bhp civic's engine are the compression.

if you want all of the engine tech's about the 1.5 engine I can give them to you but we'll have one problem then.
It'ss all in dutch and it's several pages long.

Gotta run now gotta go to work. (It's 21.15 in belgium now)

PROUD MEMBER OF HONDA CLUB BELGIUM

Hi there civiclsi15 and everyone else..

Im from Scotland in the UK and I own a UK spec 5 Door Hatchback 1.5i Vtec Sport (Year of Manufacture 95-00). Mine is a special edition and was produced only in the year 2000.. It has the D15Z8 and i too have experienced problems understanding and getting parts for my engine.

It has the green light which has the carachteristics (sp) discussed earlier..

Im not that mechanically minded but I would be interested to see any pics of 5 doors and to find out more information on my engine.. what parts have you managed to source etc.. I have found one company able to offer me an Injen induction kit but white dials are a no go.

Graeme

Nope its not an HX cause no HX has that engine code. Anyone ????? knows? IS THIS A SECRET HYBRID THAT HONDA MADE AND ONLY SOLD IT HERE?? IN GIBRALTAR!!!!!

It just might be.
I havnt heard of rear fog lights here in the states.
That sounds like the standard model. It doesnt have a DX or HX or any code like that stamped on the back. Here its just called the standard model.
The echonomy light is just telling the driving range in which to save gas.
When its on your saving gas.
Im not shure about vtec stages. I heard something like that.
But atleast on the engines we spend our time on here have one Vtec we use.

Hi,
I also have a 1.5lsi, VTEC-E 3dr civic hatch. Can I ask what top speed I should be getting from the D15Z6?? I didn't even know there was supposed to be a kick at 3.8K rpm, I dont get anything noticeable. To me this car seems like it struggles. Is there anything I could do, or is this how the D15Z6 is? It also vibrates while idling.

Also, if the car wants to pull to either side when pulling off, breaking and/or on un-even ground what could be the problem. Turning right @ slow speeds makes the back right bounce?? I have had my tracking done.

Hello again,

There is no kick with the VTEC-E vtec's.
it's not like the B16A's

The top speed should be around 190-200Kmh.

As for pics of 5-door models.

Here's one of my civic.

http://tuned-belgium.com/upload/pict/17002.jpg

Well, 80Mph is the top! :(
I really do hope this isn't how ist should be. This is with an induction kit & cold feed!!!

I just feel like ripping it out... cuz it's.....wank!
If anyone has any more info on the D15Z6 (Tuning etc) plz contact me.

just wondering...WTF are rear foglights and why would u need them? for backing up maybe? lmao just bothering me so i had to ask

just wondering...WTF are rear foglights and why would u need them? for backing up maybe? lmao just bothering me so i had to ask
Rear fogs are for the drivers behind you, to help them see you better, duh.

1. dont treat someone like an idiot(especially me) just cause they ask about something they never heard of or dont know............

2. rear fog lights are stupid, which is probably the reason u know about them...........

3. 'duh'....c'mon, even a jackhole such as yourself can come up with a crack a little better than that. IMO, think it through next time you belive u have a complete insult, uhmm k?

1. dont treat someone like an idiot(especially me) just cause they ask about something they never heard of or dont know............

2. rear fog lights are stupid, which is probably the reason u know about them...........

3. 'duh'....c'mon, even a jackhole such as yourself can come up with a crack a little better than that. IMO, think it through next time you belive u have a complete insult, uhmm k?
Maybe you should "think it through" next time before asking a question on the same intelligence scale as "what's a toothpick for?" As for rear fog being stupid, wow, you're not a bright one are you? Have you ever driven in Europeon fog? NO? Well maybe you should have a clue before you label something stupid. Do the world a favor and don't breed, please.

first of all, im in the united states and am not planning on going to any european country therefore i will never know what the fog is like over there and will never need to have rear fog lights so yes....they are really stupid IMO. Second of all, i did already know what the rear fogs were used for, just didnt know of anyone or anywhere who would need them which is why i said they were stupid cause i thought they were just a waste of money. Third, u have no idea who i am or what i can do so keep your mouth shut and i didnt add to this topic in the forum so that i could start a war between people, i was just asking a question. Leave it at that and go on with the other topics.

....they are really stupid IMO.
Your opinion equals shit

Second of all, i did already know what the rear fogs were used for,
Ok, since you can't seem to remember something that is on the same page, here let me refresh your second grade memory...
Originally Posted by 93DXon18s
just wondering...WTF are rear foglights and why would u need them? for backing up maybe? lmao just bothering me so i had to ask
I don't think I need to say anything else about that one.
Third, u have no idea who i am or what i can do so keep your mouth shut
Oh, what is that, a E-threat, ooooo I am shaking from the E-thugs terrorizing words oooooo
and i didnt add to this topic in the forum so that i could start a war between people,
You're right, you didn't add to this topic, and you got all butthurt when someone pointed out the obvious to you.

lets get this str8 ok...i never threatened u at all, all i said was keep your mouth shut. Never did i say i was going to do anything to u if u didnt, just stated that u should shut up. Also, if u really paid attn to the first reply i wrote for this topic, u would see that i said "for backing up maybe? lmao" which meant i knew what they were for just thought it was stupid and i was making fun of them by saying they were for backing up, duh lol. your so childish and really should grow up, the subject is over and theres no point in still arguing about it, and since it seems that u cant leave things alone anyways, its a lose/lose situation and its getting really boring. we got way off what the topic was and i dont have time to play these stupid games anymore.........just grow up and learn to respect people and not treat them like u are above them cause you aren't you probably have no idea about anything and dont even drive a honda, u just want others to think you're cool or whatever so u act liuke u have a decent vehicle(which is probably either a bicycle or your mothers car). let me guess, u have a honda thats all hooked up and has tons of HP and will beat anything it races against, right? lol what a waste, i wish people like u would come see me so i can show u what it looks like to blow the doors off of your car

lets get this str8 ok...i never threatened u at all, all i said was keep your mouth shut. Never did i say i was going to do anything to u if u didnt, just stated that u should shut up.
I don't shut up because some dumbass told me to, so eat a cock.

Also, if u really paid attn to the first reply i wrote for this topic, u would see that i said "for backing up maybe? lmao" which meant i knew what they were for just thought it was stupid and i was making fun of them by saying they were for backing up, duh lol.

Don't try to play off your stupidity, it looks pityful.
your so childish and really should grow up, the subject is over and theres no point in still arguing about it, and since it seems that u cant leave things alone anyways, its a lose/lose situation and its getting really boring.
So why do you keep responding?
we got way off what the topic was and i dont have time to play these stupid games anymore.....
So go away, and stop retorting to my rants
....just grow up and learn to respect people and not treat them like u are above them cause you aren't
I could careless about you, and don't see you as deserving of respect. you probably have no idea about anything and dont even drive a honda,
I have forgotten more about the Hondas I have been driving since 85 than you'll ever know. u just want others to think you're cool or whatever so u act liuke u have a decent vehicle(which is probably either a bicycle or your mothers car).
No, I have my own car, I have built it form the ground up, most people here think I'm a dick (unfortunately for gimps like you, one that is most always right), I could careless, if I see stupid shit, I call it, and will make you look stupid for it.
let me guess, u have a honda thats all hooked up and has tons of HP and will beat anything it races against, right? Why now that you mention it...haha no, it doesn't beat everything but it is a nice daily driver, yes it's a Honda, and yes it's hooked up.
lol what a waste, i wish people like u would come see me so i can show u what it looks like to blow the doors off of your car
Wow, that's funny, you try to play like I don't have a car, then expect people, or maybe just me, to believe that you have some race machine, wow, you really are a fucking idiot, sorry your life sucks, hahahahahahahahhahahahaha peace bitch.

OK both of you.....

Keep the peace!

it seems that you both misunderstood eatchother.

Something about fog:(I'm from belgium=> sometimes lots of fog)+(my poor english typing ;) )

When we have fog here it can be really dense.
I mean that it's so dens that you sometimes can't even see what's in front of you within 10-15 meters.

So I think it's not that ad to have foglights.

also our roads arent in that good shape.
which makes it feel you as driver feel a bit safer when you can see the car in front of you.
Just last week i was going to work(5am) and it was verry foggy
thankfully the car in front of me used his foglights because that wa the ONLY thing i could see(apart from brakinglight because they are the same "stenght in light")

The only thing I hate about them is that sometimes people forget to put them off.
and on older cars they are sometimes placed in te rearlightclusters.
And if you combi that fact with the lack off a third brakinglight it seems that that person is using the brakes all the time.
that could be a bit confusing.

But hey: If you'r country hasn't got fog=> they don't have to be on your car.
They mostly look odd on them.
Example=> Honda civic CRX del sol: foglight is placed leftside next to the license plate.

Hopefully you all understand this
and keep driving honda ;)

I'm sorry but I find all of that to be false I dunno where you are from but it seems to be over seas but here in the states vtec is a big hype and being that its such a big hype and my uncle is a honda mechanic and I hang out at a speed shop it just amazes me how Ive never heard of such a thing that site is saying that vtec on dohc motors does one thing and then on a sohc does something else and then something else for another..... no vtec does the same thing for alll motors just using bigger cam lobes to sum it up I find all of that to be false. and driving under 2.5 rpm is totally dogging it real bad cruising rpms is 3 grand.

He's right. There's a 1.5L 3-stage SOHC VTEC. But that's is a Asia Version with a D15B-JDM but actually a D15Z7 engine. The econo mode is real and allows u to swith between using 12 or 16 Valves. That already is 2 stage itself. In addition, there is the wild cam VTEC mode with more agressive cam lobes + air/fuel mapping after crossing abt 5500rpm.

I live in Singapore and I'm driving one. We can it EK3 VTi here.

Ditto. Those engines do exist. Another piece of eye stimulating material : http://asia.vtec.net/spfeature/vtecimpl/vtec1.html


And i believe not all regions of the world would have received that model or engine. For instance, i came across a JDM Del Sol (i am located in Australia) that had a automatic retracting targa top that unlatched itself, at the same time the bootlid would raise, the targa would slide under the bootlid, then the bootlid lower back into normal position. All at the touch of a button.

I guess i am saying this as, i've been a follower of Honda for just over a decade. And i only found out about that auto retracting Del Sol targa roof now. (btw, it did not have a b16a engine standard under the bonnet)

The same way, some of you are finding out about the 3-stage Vtec.


Now i know this is practically going against the question....obviously, these are very clean(emission wise) & economical engines. And maybe some of the reasons performance parts are hard to find, or finding information is scarce, is because it's potential for more horsepower would defeat the design of the engine. You would probably also sacrifice the economy that it already achieves. So not many people, if any, have thought of using that engine as a tuning base. Especially when the higer powered b16a is there for the taking.

Hence the different types of Vtec.

Sorry for not answering your question. But I'd tell you to save the money anyhow.

My two cents....

I guess i am saying this as, i've been a follower of Honda for just over a decade. And i only found out about that auto retracting Del Sol targa roof now. (btw, it did not have a b16a engine standard under the bonnet)

..
Del Sols had B16A3's in them, along with D16Z6's and D15B7's, aside from your local releases, they did come with them.

yeah i used to have one with the d16z6 in it.. not a bad running little motor. its a good budget turbo motor too. i hear that the d16s can handle near as much as and LS due to steel crank and stronger rods and stuff i guess

ive never heard of an economical si,no matter where it's sold,so i doubt it's vtec-e,and ever since the introduction of the obd 2 JDM sohc d15b,in about 1996,all vtec has been 3 stage.

ive never heard of an economical si,no matter where it's sold,so i doubt it's vtec-e,and ever since the introduction of the obd 2 JDM sohc d15b,in about 1996,all vtec has been 3 stage.
It's surely not 3-stage, since there is only one VTEC actuator (VTEC switch) on the side of the head assembly. 3-stage VTEC engines have two actuators for the shifts from stage-1 to stage-2 and stage-2 to stage-3 (visit http://asia.vtec.net/topics/enginevtec.html).
I have a 1997 EK3 hatch with d15z6.

peace

i have a stage 3 vtec but i cant get mine to come on at all because i dont have a proper ecu for it. I cant find it anywhere , mine is a 96 d15b imported , its obd 2 , u can tell dual vtecs, or stage 3 vtecs as u call it, by havint 2 vtec solidids right next to each other

sup i got a small prob. i got a 91 crx and it cranked and ran fine to school and it was a lil harder to crank after school but about 1/4m. away from school while i was accelerating it back fired and then cut off and wouldn't start. it would turn over a thousand times and every once in a while it would crank but the second u try to accelerate or add gas it would stall and won't crank at all.

Hi All,

i have returned :D , The top speed in the d15z6 managed by my friend since i sold my car was 217km/h!!! and i bought the JDM B16A2 1999 167bhp :P and i moved on also ive bought a vortech charger @9psi + after cooler + injectors + fuel rail + forged pistons + omni valve train upgrade package+70mm throttle body+gauges +plx m300 sensor +soon to be AEM Ems or hondata still not sure which to get though and in a two months i'll be looking into NOs , but my knowledge has vastly improved. Anyways i come by to say hi and i got amazed that there were ppl still posting stuff in this forum. All i can say that d15z6 is a nippy little quick car or BTw it use to wiegh 965kg kerb wieght. My friend which currently owns it now doesnt stay far away from stock b16a2 civics. As for the stages in vtec i will neva know exactly but we can always theorize. ;) oh one more thing the Civic EX sohc(d16z6) many parts availabe from that car can be used with the d15z6

Happy new year BTW

ok , i know this is a old thread but i'd like to add my input about the stage 3 vtec the jdm model which my friend own has two vtec spool on the intake manifold and not next to the distributor. the engine creates up to 130 psi at 72,000 rpm very well put together engine . this is fount in the ek3 sedan of 3dr hb.vti
top" Civics relies on the D15B engine in various configurations. The D15B displaces 1493c.c. and is always SOHC in design. In the EK3 series of variants, Honda equipped it with either just plain PGM-Fi which produces 105ps or the now famous 3-stage VTEC mechanism in which case it produces 130ps but with fuel consumption that can reach up to ~28km/l ! With the EK-generation, Honda also continued with the segregation of using the Civic name for the 3-door hatchbacks and Civic Ferio for the 4-door sedans. However, in addition to this Honda also used different type nomenclatures for the hatch and sedans