More HORSEPOWER

Whats yup guys I"m new to this website .It looks pretty good and informative about Spec V's in general.Well my curiousty is about how's the proper order in putting aftermarket parts to gain more horsepower.I"m looking to obtain hmmm.....possibly maybe 265-300 or even lil more.I"m running with a Greddy exhaust system , a AEM cold air intake and just recently installed the Tornado device if anyones' heard of it.Trust me guys the thing works. I'm assuming I gained maybe 20-25 horsepower and the car is 175 horses stock.I would like to put a body kit and new tires and rims along with my modifcations.I"m more concern with the engine first before I do anything exterior projects.If anyone can give me help with what I should get first and then what goes next?I"ll buy you a beer who helps me....haha! I don't wanna blow my engine you know.I wanna do this right and get good results....Thanks..................later people

I have a question about that tornado thing? What is it? and where do you install it? Also I think next thing you should do is put a header into your car. It gains a lot of hp and Hotshot makes a really good one.

I have a question about that tornado thing? What is it? and where do you install it? Also I think next thing you should do is put a header into your car. It gains a lot of hp and Hotshot makes a really good one.
whats yup bro well you can install it by the gastankmanifold the very begin part of you cold air intake.Its fits tight inside the tube and doesn't jerk or loosen.It give you instant power/horsepower yup to 5-10 horses and good gas mileage.

It's a little aluminum device that sits inside your intake "spinning" the air that passes through. They claim that this spin forces more air into the cylinders and gives you more power, but it's all a load of crap. I'm too lazy to go into the details of why right now, but if you want I'll explain it in depth.

1) you aren't going to get 265-300hp without adding a large turbo kit and rebuilding the internals (read: over $10,000 installed)
2) You didn't gain 20-25hp from the tornado, you obviously don't have any idea what added power feels like, which leads me to believe you have no idea how fast a sentra with 300hp will be, you're just thinking that might be a good number to shoot for since sports cars come with ~300+hp.
3) Forget about crank hp (the advertised hp), and focus on wheel horse power, it's what really matters. Stock the qr25 (your engine, if you didn't know already) makes about 145whp. Even with thousands invested in bolt-ons you will never break ~170-180whp, and that's with i/h/e, cams, etc. If you want more than that you have to get N2O or a turbo. On stock internals the most you can push is ~240whp, any more than that and you start snapping rods. If you want more you need to upgrade the internals, which will cost several thousand dollars.

Oh ok I got you bro I have other aftermarket parts in my car.I'm not saying the tornade gave me 20-25 horsepower........LOL but with everything I think I gain about that much more.Well 265 lil more be good not exactly 300 if its gonna cost $$$.I know you know more about engines then me.So what do you suggest I do first in your opinon before anything?would changing the electric fan and lil minor things make a big or minor difference etc etc.I already have the tornade,cold-air intake and exhaust system.......thanks man

The next step is a header then, with an intake and exhaust (which probably added 5-7hp together) you're looking at maybe 10hp from a header. Go for Hotshot, AEBS, or Nismo for a header, anything else is a ripoff and will crack after a few months, or not even fit in the first place. After that, a lightened crank pulley, motor mounts, short shifter, and cams all come next, in whatever order you want. An air/fuel controller or flywheel would probably come next if you don't go for N2O. After all of that you're looking at maybe 180whp at the most, which is good for mid 14's in the 1/4 if you're a good driver.

Hmmm that sound good 2 me...I don't want bolt on cheap shit u know....lol...I was thinking maybe those upgrades too I'll follow it hopefullr maybe in a few months I can pull off those upgrades.I wanted to ask what do you think about those chips that suppossed to give you more improvement power.......like the VENOM CONTROL MODULES or those AIR FLOW CONVERTER BY APEX YOU KNOW COMPUTER TUNING AND HOTWIRES? Thanks alot bro.....ill keep you updated.......I"m luis

they won't do a thing

The only electronics that will help you at all are a reprogrammed ECU, which isn't made for the b15 sentra, or an air/fuel controller, which wouldn't do anything until you get it tuned right, which would take a couple hundred dollars in dyno time plus the cost of the controller itself.

yea bro I looked into the parts lately.It good shit maybe next month I start getting my headers and etc etc.So with ur suggestion on parts ?How much you think overall my car will make in horepower....in ur opinon with everything in stall with intake,exhaust, cams,pulleys,,,,,and the car is 175hp out the factory........etc etc......?thanks bro......luis

Well for one stop thinking about everything in terms of flywheel horsepower. It means nothing really, and all it will end up doing is confusing you. In fact the only way to even test your flywheel horsepower is to pull the entire engine OUT of your car, hook it up to an engine dyno, and go to town. Actually stop thinking about it in horsepower at all, flywheel or wheel. We aren't driving high powered turbo cars here where a small change in the a/f ratio will give or take away 30whp. The power gains from bolt-ons on our cars are miniscule at best, I mean you're looking at between $50-$200 per horsepower here. If you start looking at it that way it will only make you stop modding.

The best way to think about things is in 1/4 mile time, mainly because power means nothing with an idiot behind the wheel, or in a car that weighs 8000lbs, and your 1/4 mile time takes that into account. With i/h/e, crank pulley, and cams, You're looking at mid 14's if you're a good driver, of course if you're a bad driver you could be in the 15's easily.

whoa i would think that tornado thing takes away hp. I think it juss gets into the way of the airflow and who knows if it really spins on the inside. I`d take that sh!t to the dyno. Wait...how much did you blow on that tornado thing?

Ummm well bro about 65 cash$ at a store here in long island close where I work.Its a import store with kits,lights all that good stuff.If you buy it online it will be about 75$ i think or 65$ with shipping and handling.UMm its makes performence/power lil better and gas mileage lil better for as well.Not everyone agress it works and my friend felt a difference in the acceleration.It doesn't spin in ur cold air intake just kinda latches on tight inside.The airflow is was spins that what they say.Try it doens't hurt bro.....luis

hey sr20de4evr ehy man .Well I"m gonna follow on your suggestion for upgrades in the engine.I"m not trying to go extreme bro as for as horsepower but like I said i just want more power and better performence.Maybe Later on I'll ask for your advice on turbo and shit in year or too.How much you think i'm looking at for all those upgrades you mention but good brandes.I"m single and work for the post office so it isn't a big deal....lol.....$$$...thanks bro....luis

wow thats a lot of money B. I might have to try it out myself. I heard people say those were garbage but ill look for one sumday and try and see for myself. Oh yeh...you should go with headers and pulleys. Then if you got the dough get some internal work done.

http://www.turbo-kits.com/sentra_turbo_kits.html

i dont know if they have kits for the newer years but you can e-amail them to find out. dont bother with all that bolt on bullshit if you really want more significant HP get the turbo kit with 8 psi boost which will be fine on stock internals. However I do recomentd changing to a race clutch before installing the kit. for $3600.00 you get the complete kit with everthing you need to install a turbo kit the right way. Think about it if you buy a decent header its gonna cost you around $800.00 for this car. The only other thing ud buy for it is a 3 in. cat back exhaust to compensate for the higher flow. Add up all the bolt on bull shit ita gonna cost you 3/4 the price of the turbo and you will get less than a 1/4 of the HP gain. its a big project but do it right the first time and you will be happy. I don't know how mechanically inclined u are but its reall not that hard to install it yourself. Honestly if u have access to a lift the clutch is a piece of cake in these cars. I've done clutches on civics before this one looks easier than that.

http://www.turbo-kits.com/sentra_turbo_kits.html



Those are all for the GA16 and SR20, the only guy brave enough to make a turbo kit for the QR25 is Travis.

http://www.fi-r.com/

Yes it's pretty pricey, but he does good work and he's the only one to successfully pull off a reliable turbo kit for the QR.

Whats yup guys.......I got a 2003 sepc v myself......and I"m thinking about getting a header,cams,pulleys,shortshifter, motor mounts for my spev to get more power at the wheels and all that good stuff.Does any one know what are good name brands out there for these part I want on the market?Not some cheap ones but good reliable ones?Also is there anything else i'm missing I can add on to my enegine bolt-on wise?Thanks people

Whats yup guys I have a sentra spec v 2003.Im' looking to get a header,new clutch,cams and pulleys,camshafts,short shifter,motor mounts as well.I would like to know if you guys know what are good name brands out there that sell these parts.But that are good and reliable.....not cheap shit.Anyway is there anything else I"m missing I can get?Thanks alot.........

http://www.turbo-kits.com/sentra_turbo_kits.html

i dont know if they have kits for the newer years but you can e-amail them to find out. dont bother with all that bolt on bullshit if you really want more significant HP get the turbo kit with 8 psi boost which will be fine on stock internals. However I do recomentd changing to a race clutch before installing the kit. for $3600.00 you get the complete kit with everthing you need to install a turbo kit the right way. Think about it if you buy a decent header its gonna cost you around $800.00 for this car. The only other thing ud buy for it is a 3 in. cat back exhaust to compensate for the higher flow. Add up all the bolt on bull shit ita gonna cost you 3/4 the price of the turbo and you will get less than a 1/4 of the HP gain. its a big project but do it right the first time and you will be happy. I don't know how mechanically inclined u are but its reall not that hard to install it yourself. Honestly if u have access to a lift the clutch is a piece of cake in these cars. I've done clutches on civics before this one looks easier than that.
that kool bro whats a good turbo kit that i won't have to change the internals?I forgot the enegine model or cars has for a 03 spec ser...and could it pass the state inspection?

check this place out
http://www.powertechimports.com/

Hey whats going on guys...interested in your discussion...trying to learn about cars... i have a 99 acura integra and i put a turbonator in it and it kinda sounds like one of those tornado things and i didnt notice a difference untill i put a k&n air filter on it. But it doesnt sound like yours is in the same place as mine. also where did you find the aem cold air intake...im looking for one but $230 is a little much for me i dont have much of an income. I also want about 20-30 more horsepower out of mine and im looking for cheap suggestions that will work... i have a 2 and 1/4 inch exhaust with a high performance air filter and the turbonator.

hey wuts up guys im new to this forum, i got a 2004 spec-v and i turboed it by ssr-engineering, and i also got JWT camshafts, valve springs, flywheel, clutch and balance shaft removal kit, nismo short shift and intake, ssr exhaust and mid-pipe, nismo shock and spring kit, rear sway bar, front strut bar, front sway bar, lower tie bar, bushing kit, energy suspension motor mounts, 17 ro-ja wheels, UR crank pulley, apexi AFC 2, 40 shot nitrious kit (yea i know its nothing big), JSP invader style carbon fiber hood, custom JSP carbon fiber trunk, and JSP carbon fiber wing, and im waitng for

future mods - VIS racing to make my carbon fiber r33 kit, fi-r to do my engine sleeving, pistons


http://images5.theimagehosting.com/289dyno.jpg

i dont even think you will get 265 whp outta the qr25,as far as the pullies go,yea i understand ur tryin to get all the power u can to the wheels but in my opinion i wouldnt do it.i kno people that had them and of course had a/c problems and the battery died.
go with a full exhaust 2.25 or 2.5 inch,then cams,flywheel,nitrous..

SSR- I hope that A/F is before SAFC correction, LoL.

SpecVSpic- I would like to invite you to join our sites at www.thevboard.com and www.b15sentra.net, we shall take you under our wings. Welcome to the B15 community. My fellow comrades and I can answer any and all questions you might have about the QR25 and modifications. Also, feel free to e-mail me at [email protected]...

This is my car... http://www.cardomain.com/id/aemspecv

o yea my bad typo...SAFC II

You guys should checkout The V board. its a site just for spec v's.. they have dyno and 1/4 times posted from all the members and that should give you a good idea of what to expect.. The normal gain from all the bolt ons will get you 175-180whp. then theres forced induction.. with 175-180 whp it's possible to run anywhere from 14 flat to mid 14's, depending on driving skill.. I was actually reading a post last night and this kid has pretty much everything but cams and he ran 14.03 on street tires.. I'm sitting back right now deciding which parts to get and from my research i can tell you the following:

Headers:

Aebs-11.45whp
Hotshot-12whp
Nismo w/o cat- said to be 16whp, but no one has dyno proven it

DC sports-10whp

Best bet on the header is to go with the hotshot because its a well know, well engineered header and it gives top gains. aswell as costs almost half as much as the nismo header.

CAI:

aem- 3.2whp
hotshot-4whp
injen-7whp
Nismo-claims 8.7whp

As for the intakes, they are all made of the same 3" tubing and are no different so i;d just go with which ever you can get a better deal on.

Underdrive pulley:

UR-1 or 2whp

As far as a crank pulley goes its almost not worth it

Catback exhausts:

Your not gonna see any good gains on a catback. i guess the deal is that the stock catback it already pretty freeflowing.

Maganaflow- poor fitment and magna flow claims 7.6 whp. very doubtfull when it's the same exact setup as nismo and nismo only makes 4 whp

Nismo- very high quality and pricey around 4 whp
Greddy evo- a favorite with some ppl makes about 3 or 4whp

stromung-2.7whp and its heavy

Balance shaft removal kit: a pain in the ass to do but the v board has good instructions and even some videos on how to do it. gains are around 8whp

HP downpipe: 5whp on a stock spec v and 3 on a moded

Cams:

JWT- littley aggressive and give around 7 whp

Nismo- not as aggressive as the jwt

This is just some of the information i have found over the last couple months of researching myself hope it helps.

Tornado's restrict airflow, I'd rather not have one than put a free one in.

Good mods to start on:

CAI
Headers
Custom catback exhaust with racing cat, and low-restriction muffler
UR Pulleys
Hotwires
V-Force controller
Lightened flywheel
Custom downpipe
GT28R Turbo
Apexi boost controller
Tial BOV
TurboXS wastegate


Also for handling purposes:

Strut tower bar
Rear sway bar
Front sway bar
Energy suspension mounts
Big disc brakes




Remember, you don't have to wait for aftermarket companies, you can always go to custom performance shops and have them make you one-off pieces, but it will cost you.

i keep hearing ppl say headers. theres only one "header" on our motors. it's an inline four, intake on one side exhaust on the other. Anyhow if you wanna go fast you gotta drive good as well as have a fast car. a fully bolted spec v with slicks will run 14.0 in most cases. best bet is to learn about forced induction, turbo's and superchargers, and get a turbo kit.. a lot of guys on the v-board are running good power from low boost.. In my opinion you could spend 500 bucks and make just as much wheel horsepower as a 4k turbo kit on 5psi. so it's up to what u wanna get yourself into.. But knowledge is everything, and for guys that think they have " headers", i'd do my homework first.

Yea and the tornado thing is bad :nono: , it restricts airflow, thus decreasing power.. You wanna feel some gains get the hotshot header it's good for 12-13 whp

Whats yup guys haven't been here in like 4 months....I really haven't done anything to my car being that its under warrenty somewhat..lol.Anyway I"m not looking for any upgrades or turbos right now..too much $$$$ save it to go on trips to party.Thanks for the advice bro I think i will take the TORNADO out of my car when the weather gets lil warmer.I do get the sense that my car laggs a bit when i hit the gas froma stop sign...like some power is being held back...somewhat.Otherwsie everything is kool...got a new clutch runs beautiful..put a sliencer on my greddy exhaust to quite down my car.I'm getting lil tired of the the sound my muffler makes and draws too much attention at night on the weekends.Futhermore I think I"m gonna get this sick bodykit and these rims and put a PS2 in my car for the summer.By the way if I drop my car with EIBACH springs would i have to change the shock or get coilcovers...just want a nice smooth ride.Thanks.....later people

not right away but the stock shocks will wear quick with those springs..i say ditch the body kit and sound system and get a nitrous kit

not right away but the stock shocks will wear quick with those springs..i say ditch the body kit and sound system and get a nitrous kit


Hey bro whats yup...nah not too taken with nitrous or trying be the fastest...LOL....think i'm passed that , I don't even race either.Like i said rather just crusie around and enjoy more things than be concern with nitrous or spending crazy money on that kinda stuff....Thanks for the advice with the eibach springs...thou how long would the stock shocks last?

What could i do as for as getting some pulleys made for me. For my accessories in my car. You know some light weight pulleys for my 05 Spec-V. I'm not looking to pimp the hell out of my car. I want to help the gas mileage a little for the moment. I'll be gathering some parts waiting for that close to deadline for warranty. Please let me know of someone i can get in touch with about getting some lightened pulleys made, and find out about cost and all.

wow this post back from the dead, there is a 500whp swap out for our specs now, it will set you back somewhere between 10k-15k depending on how many parts are reused and such contact travis at fi-r.com he installed a sr20 crankshaft into a qr25 block and bossted it up to around 18psi and hes making like 400hp and shooting for 500 with 28psi and racing gas

Of course I revived a dead forum man. I'm at work and all i can do to kill the day is these damned forums. So you guys need to put some good shit in here.
HEHE

Turtle Turtle