How to make a 90 mpfi harness work in an 88?
 

I can't find an 88 si/hf engine harness anywhere...
I have a pile of obd-0 mpfi engine harnesses, but they are all 90-91.

Anyone here made a 90 mpfi engine harness work in an 88?
Any known write-ups?

Re: How to make a 90 mpfi harness work in an 88?
 

if you have any hf harness's 90-91 Ill buy one that doesnt help much sorry

Re: How to make a 90 mpfi harness work in an 88?
 

haha no that doesn't help and I have no hf harnesses.
thanks?

Re: How to make a 90 mpfi harness work in an 88?
 

Just add it in you don't need to chage the hole thing out, just add the other stuff you need.

Re: How to make a 90 mpfi harness work in an 88?
 

I had that same prob with mine.....turned out i could either pinout the connectors on the shock towers or i could change out the whole harness( which i did)....hope that helps any

Re: How to make a 90 mpfi harness work in an 88?
 

just hack them up and make you 88 harness mpfi. Take your time and do it right, you shouldn't have a problem.

Re: How to make a 90 mpfi harness work in an 88?
 

I hope this helps, it a lot less work then it seems http://www.fourthgenhatch.net/mpfi.html

Re: How to make a 90 mpfi harness work in an 88?
 

i got 1

Re: How to make a 90 mpfi harness work in an 88?
 

I have pm'd you numerous times with no response.
If you wanted to sell it you could pm me a price shipped...

Re: How to make a 90 mpfi harness work in an 88?
 

it will run but have fuelcut and a ---- load of cel's.

i ended up building one from scrap plugs. took a while, and i thought my brain would fry but it ended up with no cel's.