### Spec engine with U.S. Ecu ?????

[EclipsingJAX]

Hey you guys.... I am looking at a 91 plymouth laser fwd. it has a jdm engine swap but for whatever reason the company that sent the motor over didnt give the correct ecu. at first they sent a non turbo ecu. the car did not start.... so the owner put in a turbo ecu but it is for an american dsm. i am wondering what symptoms the car would have with a U.S. ecu and a ### Spec engine. the second question I have is where can I find a ### Spec ecu.

1. the car seems to have a lumpy idle
2. the car cuts out sometimes (almost like it had fouled plugs, but plus are new. wires may need to be replaced) at around 5000 rpm. the car has a 'T' in the wastegate hose making it add a few pounds of boost and the weather is about 40 degrees outside.

also, the car has some oil on the transmission case. i dont know if it is just old oil vapor collecting there throughout the years or whether there is a problem with leakage. he says he has to add a half quart every 2 weeks. there is a known oil leak by the turbo which he will fix soon.

car is stock except for that engine swap and the 'T' in the wastegate hose going to the turbo.

do you think the problems one and two are related to this ecu?

Tyler

 

[gsxmaniak]

i hve a 90 gsx and i just did a swap the last 2 weekends and now the damn thing starts like you say and it dont idle right. i believe it needs a jdm ecu and that should fix it. or you can do a hobbs switch setup and that will fix it. i think. but thats what ive picked up on.

 

[Tallen]

I hate to crap on your parade, but the problem probably is not ECU related. The only reason you'd need a JDM ECU is to run the cyclone manifold, which you should have ditched by now anyway. The engines are damn near identical otherwise.

 

[gsxmaniak]

so how do you sugest to fix the prob smart guy. im keepin my new engine and tranny so what now. i have the same prob.

 

[ShaggieRL]

the cyclone manifold, which you should have ditched by now anyway. .

have you done this????

 

[Tallen]

have you done this????

No I usually stick to women.

so how do you sugest to fix the prob smart guy. im keepin my new engine and tranny so what now. i have the same prob.

Well if I were a smart guy, I'd list more symptoms and rechaeck anything you've done to the car recently now that you know it is not ECU related.

 

[ShaggieRL]

hahaha i ment the other guys not you