i dont get it... can anyone help me... my crx is a dpfi i want to switch the manifold to mpfi... but my car is a auto tranny... n i want to run as a auto tranny foe mpfi..... how to do it.... n what kind of ecu should i get... i got pr4 ecu pm6 ecu... n pm5 ecu.... whitch one is for the auto tranny.... i just dont get the rewire thing....

 

just look for the instructions, and when you find them read them over and over again until u get it. the fact that its still auto doesnt really matter. the procedure is still the same

 

dpfi to mpfi add one wire to computer ----------you need a ps9 its from an auto ex 90-91 model

 

the one wire is for the shift sylenoid

 

Same as a manual MPFI swap but you'll need the EX Throttle Body, and the PS9...
Oddly enough you can use a PS9 for one-wire vtec on a manual swap.

 

I think I actually have the complete manifold from one of those civics from back in the day when I thought I was going to do the same swap but never got around to it. I shoulda grabbed the ECU since those cars are kinda hard to come by in junkyards, but I was naive then.

 

I have a complete manifold in my garage if Crxsirg doesn't have one, and I believe I have a computer for you. Let me know if interested in either one.

 

yea i got everything but dunno which ecu to use for auto tranny... my motor is a d15... n i just want change the dpfi to mpfi... dpfi run to slow foe me...any idea of an auto ecu...for my car year... 88 crx...

 

I have a ECU I pulled out of an automatic '91 Si hatch, I'm pretty sure it's not a PS9 though.

 

ill buy it from u... foe how much...

 

There was an automatic Si hatch in canada?!?

 

Yep, I've seen two, and owned one.

Bonies, let me make sure I still have it. I'll PM you a price later.

 

Cool,

learn something new everyday.

 

aight... but i want to now what kind of ecu is it.... i got 2 pm5, pm6, n pr4.. i know those doest work for my auto tranny....

 

I have a PM6 that is an auto ecu. I have never seen the ps9, but I had this PM6 in my car and it always had a check engine light for the auto tranny. I can't remember the code off hand, I picked up a manual pm6 and have ran that ever since. If the deal between you and ZAKU doesn't work out you can have mine for cheap, it's just sitting in a box in my shed at the moment (no worries, it's safe from the elements). I was gunna chip it with a performance chip that would convert it to a manual ecu, but I've since gone to obd1 and now have two PM6s on my hands. Good luck with it, hope you get her hooked up soon.

 

if i buy it.. u sell for me... 40 if that is ok..wid u..... need to fix it before winter comes..... is the PM6 can me mpfi... cuz i now the PM5 is dpfi... yup neva seen a PS9 befoe....

 

I didn't mean to cut in on the deal you had goin with ZAKU, but I'll get it out after work tonight and take a pic of it for you. 40 bux sounds fair to me. I'll post those pics tonight and we can figure it all out then.

I'm also curious if anyone has a pic of a PS9 ecu. I've never heard of one until this thread, so I've never seen one either. I found his thread https://honda-tech.com/forums/showth...light=auto+pm6 and it lists the ecus for obd0 and there isn't a PS9, but it does show how to tell if you've got a 5 speed or an auto. I'm just curious. thanks

 

its hard to find a auto PM6.. i try to find it but couldnt found one n my town.... that PS9 i got to see it.... i got everything ready but didnt have the rite ecu for it..... i got a PM6 but that one is 5 speed.. dont work on auto tranny....

 

Here's the pics of the ECU.

I know the ecu was pulled from a 90 Civic EX sedan, I bought my mpfi swap from a friend who had that car which was rear-ended. I put it in my car and I kept throwing a lock up code I believe it was. I got a PM6 from an Si (manual of course) and no more code, so it's to my knowledge that this is an auto ecu. I'll ship it to you for 45 bux, sound good? Let me know man.

 

aight how should i pay.... through paypal or moneygram.....

 

Paypal I'll pm you my account. thanks dood

 

hey guys,

im in the same pickle: ive got everything i need from a 91 si (including a standard pm6 ecu) to perform a mpfi swap except the host car is auto. this ps9 ecu seems to be a real bitch to find. i spent a few hours cracking open civics at the scrap yard last weekend and couldnt find it.

ive read that its possible to convert a pm6 to a pm9 if you sacrifice an auto pm5. anyone know how to do this?

or better yet, anyone have a ps9 lying around?

 

neva heard of a PS9 ecu.... that i wanna see it..... but i do have 2 PM5 ecu...... im using a PM5 for my crx.. imm change the manifold.....

PR4 ecu is for dohc motor.... cant use it..

 

well here it is, comes from a 90-91 civic ex, i believe.

i hope somebody's got one.

 

So im having the same problem did you ever figure out the solution?