DPFI - MPFI swap

ok my friend is parting out his old SI engine, but keeping the harness and ECU from it, anyway does anyone know what parts i need to convert my dirty old DPFI to MPFI?

also my car is an automatic, and i was reading a how to on the swap, but it said manual trannies only, what would be different on my auto?

In my opinion it's kind of a waste of time and money. Why not just get an Si engine and drop that in.

cuz the engine he is ditching is leaking oil, and has alot of miles on it.

my engine has only 90k and runs mint, plus i get the same HP as the Si after this swap, plus it is an easy upgrade.

You'll have less torque because DX has 1.5 and Si 1.6

Parts:

Intake manifold
Injectors
ECU
Fuel rail
Injector resistor box
Si head (optional)
Si Distributor

Misc stuff:

Coolant hose
Extra wire


I would go for it. It is a cheap upgrade that will give you some extra power. Good Luck

damn i definatly need the ECU? cuz i read somewhere they just switched some pins on the DX 5spd ECU and it worked, but like i said i have the auto, and these parts should only cost me like$50, so i have to do it.

Originally posted by FourthGenHatch
In my opinion it's kind of a waste of time and money. Why not just get an Si engine and drop that in.

because, it's the first thing that is needed to be done before you drop in a Si engine, ZC, b16, or any other engine for that matter. it is something good to do period...can i get an Amen 91ZC? :lol2:

i don't know what parts you need. i was lazy...i just went out and got a Si (hehehe). anyways, i do have this little piece of info:

don't try to switch the ecu & not distro....or the other way around. you need to keep them from the same model of car. it will idle really rough...might not even keep an idle at all. (doh!)

if you're friend is gonna hook ya up for like $50-$100, i'd say do it :jump:

you need all the part's listed for the manual but you need a ps9 ecu.this is from a 90'-91' civic ex or si automatic.

Do What (FourthGenHatch) Suggested, You Can Buy A 1.6 L Engine, For The Same Price As The MPFI Intake Itself!!!!! The Swap Is Not Worth The Money!!!!!! You Have An AUTOMATIC Anyway YOu CANT EXPECT MUCH OUT OF THAT!!!!!!!!!!!!

this was also talked about a little bit before http://www.automotiveforums.com/vbulletin/t56531.html

And to 1990civic - dont come in here busting out your exclamation marks and shit about his upgrades, and who the hell cares if he has an auto, we are all brothers (and sisters) here.

oh and crxlvr, i notice youre up to 19 tickets, what was the 19th for?

THAT JUST SHOWS HOW MUCH YOU KNOW M E L T!! YOU HAVE A 4 Door NEED I SAY MORE!!!

OoOo, I have a 4 door, does this somehow make me stupider than the hatch / crx owners because I have a 4 door? First you come in here dissing auto's and now this? Not only have you offended me, you have probably offended the following people;

91zc
daddys
DarkImportGrey
sastanley
4G4D Store
91civcex4dr
Redline_civic91
91b16sedan

just to name a few anyhow.

Conclusion: I will play nice if you do, us 88-91'ers are like a family, and although there are some hatch/crx guys that dont really care for the sedan, they still respect us because we all share a common interest, we have 4th gens (or are fans) and we like them, so we come here to AF to talk about em and ask questions. Just because you may not be a big fan of the MPFI swap doesent mean someone else cant do it and as crxlvr mentioned earlier, he is getting a great price on the parts. So shape up, I am sure you will become a valued member of our forum but if not ship out, we dont need haters here.

And mod's if I overstepped my bounds as a regular member, I apoligise in advance.

Yea You Right

My Apoligies To All The 4dr Civic Owners

i have the ULTIMATE MPFI swap in my car its basically a DX block/head/tranny and the rest is my stock Si stuff...well you see, i bought a DX motor for 100 bucks and put it in my car to get me around til i get the beasty 1.6 rebuilt..but MAN DX motors in an Si are slow like a mofo, i think its due to the fact that my car weighs more than the DX car. I think im gonna have to put my web-cam outta my Si head in the DX head to give the car a little more go..

JDM=poop USDM=woohoo
LOL, although I must say it would be sweet to get some SiR's here or some decent corner lenses so we wouldnt all have to go out and get clears

By the way, do people with JDM stuff go out and get USDM? If so, some of us USDM'rs with stock parts could get rich:D

Like I said before, do the swap if you are low on cash. It is a budget mod that will give you more power and help you take advantage of other mods. If you have an automatic try finding an 88-89 integra automatic ecu or 90-91 civic ex auto ecu. Otherwise you might want to think about a manual conversion.:) Good Luck man

Originally posted by Melt

LOL, although I must say it would be sweet to get some SiR's here or some decent corner lenses so we wouldnt all have to go out and get clears

By the way, do people with JDM stuff go out and get USDM? If so, some of us USDM'rs with stock parts could get rich:D

LMAO! actually melt, bracer once called my attention to this pic:
http://www.4thgenerationcivic.com/JDM-EDM-USDM/EDM/edm%20photos/Untitled-TrueColor-05.jpg

they are both EE9 1.6i's (EDM version of the JDM SiR). if you notice the car on the left has amber corners. :lol2: he was going for the USDM look :smoker:

ok...enough said...Your DX ecu should work but you need to swap a few pins. June 2002 issue of Sport Compact Car magazine has a step by step instruction on converting DPFI to MPFI along with a list of stuff you need. Let me know if you want me to read and type a few stuff there for you.:flash:

Thinking about doing the MPFI swap using parts from mdnnccivicrcr's EX, he said he still has and would sell me all this shit aside from the head

Intake manifold
Injectors
ECU
Fuel rail
Injector resistor box
head (optional)
Distributor

What do you guys think is a good price, and what obstacles can I expect when I put all the shit in, I dont want to embark on something too difficult due to my lack of mechanical knowledge, and because with my car I am more into audio and a couple of exterior mods (nothing too fancy) than I am into the engine. The only reason I have exhaust is because the stock one rusted through and fell off, the only reason I have a high flow cat is because the stock one clogged. My short ram intake is for acoustical benefit and it was cheaper than a new air filter.

Just get a bottle Melt and should your motor blow...it would be a good reason to do a swap.:flash:

No, seriously...DPFI to MPFI is easier than you think...and would feel a pretty good increase in power. But as you said, if you're more into exterior and sound system mods, forget the MPFI and stick w/ what you have.

im not doing it anymore, a lot of the parts from the EX are messed up. I am however buying a haynes manual off him for $5