I have a buddy with a 91 DX hatch. He is having some problems with his automatic tranny. He is considering doing the 5 speed conversion. I have everything he needs to do the swap except the ecu. I know that the car will run with the auto ecu. My question is: Will this cause any problems other than the check engine light and a code 19.

Thanks in advance.

 

Anyone?

 

why change ECU's?? u can use a auto ecu on a manual
nottin changes actually... just one pliug for reverse

 

Anyone else have any thoughts on this?

 

i've always been told you can't use the auto ecu, but i'm not a guru.
i changed to a stick at the same time i changed to mpfi, so ithrew in an si ecu.

 

He plans on doing the mpfi swap as well. Just doesn't have all the parts or funds right now to do so. That is why I am trying to find out if his auto ecu will present any problems.

I really don't think it will be a problem. Sometimes I get a little paranoid about this kind of stuff.

 

You ought to just go look at the junkyard for an ecu. DX ecus are very common and very, very cheap. I believe that any ecu from an 88 - 91 DX (body style doesn't matter) will work. Look out for the Std. civic (4 speed hatch), though because it may have a different ecu.

 

I have a b16a in my civic with a automatic ECU it runs fine, and the check engine light doesn't even come on.
A friend of mine has a automatic DX sedan, and I hook up my old si computer to it and it wouldn't even run, I car would barely start, so I don't know just try it