MPFI-MINI-ME Questions

[forcefanad]

alright guys.....i have the chance to get a ex head and transmission for free or next to free. heres my questions....first off....dizzy. i have a 91 civic standard model...DPFI so im gonna be going from DPFI non vtec 4 speed to MPFI vtec 5 speed....the only concerns i have has to do with the distributor.....since its and obd2 head i knwo i need a new dizzy....but can i use mine off the dpfi set-up with the mpfi setup-vtec. whenever i do research on the mpfi swaps they say u need a mpfi distributor....i dont get why.does it have something to do with the computer...i was planning on using an si ecu.

i guess well start with that

[4GZChatch]

Here's the list. Just trust me, I've done this a bunch of times and tried different stuff. Here's what is guaranteed to work.
-yes, an Si ECU will work nicely
-yes, you need a 88-91 civic Si dist
-You can't use the EX tranny unless you get a hydro to cable conversion for it... that trans is off a car with a hydraulic clutch
-obd0 injectors
-injector resistor box off an 88-91 civic or 90-93 integra, or 94-96 accord
-injector wiring and clips from any mpfi honda motor
-you'll also need to add wiring to the distributor for the cyl 1 position sensor, so I'd pick up the dist wiring off the car you get your distributor from.

Any other questions, post up. I've done that swap a dozen times or more!

[arodg25]

Originally Posted by forcefanad

whenever i do research on the mpfi swaps they say u need a mpfi distributor....i dont get why.does it have something to do with the computer...i was planning on using an si ecu.

the distributor from the si has a crank angle sensor in it, because the ecu needs to know where the #1 cylinder is so it has a reference point to know when to sqirt the injectors.

[forcefanad]

Originally Posted by 4GZChatch

Here's the list. Just trust me, I've done this a bunch of times and tried different stuff. Here's what is guaranteed to work.
-yes, an Si ECU will work nicely
-yes, you need a 88-91 civic Si dist
-You can't use the EX tranny unless you get a hydro to cable conversion for it... that trans is off a car with a hydraulic clutch
-obd0 injectors
-injector resistor box off an 88-91 civic or 90-93 integra, or 94-96 accord
-injector wiring and clips from any mpfi honda motor
-you'll also need to add wiring to the distributor for the cyl 1 position sensor, so I'd pick up the dist wiring off the car you get your distributor from.

Any other questions, post up. I've done that swap a dozen times or more!

Thanks for the list....i knew about the conversion kit i needed for the trans....i dont know if im gonna go with it yet or not....pretty sure i am tho.

[turtlecrxsi]

Originally Posted by 4GZChatch

-yes, an Si ECU will work nicely

I don't see why someone would go through all the throuble for a mini-me swap for vtec and use a non-vtec Si ECU with an rpm activated switch. It seems like a rather ghetto way of doing it IMO and from what I understand you don't get the full potential of the vtec (something about not getting enough fuel at high rpm). To read both sides of the story (ie. rpm activated switch and vtec controller or obd1 conversion with proper ecu) read this thread at H-T here and here is a link from our own peoples. Read what Cjz89civic says...

[forcefanad]

alright guys....heres a better one for ya....i talked to the id today thats giving me the shit....and he said he will give me the whole wiring harness ecu obd2-obd1 wiring harness complete head and trani for free......now can i take that wiring harness and feed it in and it will theoratically work? im not too good with the wiring aspects so i tend to overlook problem i may have......so im gonna get the body and engine wiring harness....obd2 injectors dizzy and complete head with intake manifold and alll sensors with the ecu....possible not??? wut do u think?
TIA
adam

[forcefanad]

lil help?