B16, B18, B20
By baade3
#307076 I have an 1995 si with a swapped jdm b18c using the p72 jdm ecu.
when the motor gets warmed up it sputters along the acceleration until vtec.
when I plus in the USDM p72 it runs perfect just obviously cuts out vtec.
Bad jdm ecu?
Cause obviously the fuel mapping is the issue cause i can smell fuel after is sputters most of the time...
Confused. Like I said it runs perfect with the USDM p72. suggestions would be appreciated before I go buy another jdm p72 for 300 dollars too find out its not the ecu.
By baade3
#307077 And when it sputters with the jdm p72, its not consistent. Usually after sitting at a red light. sometimes it'll do it in 2nd gear then i shift to 3rd and its fine. I dont get it.
By baade3
#307087 and for some reason it's redlining at 7200ish rpm
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By bradleyg
#307206 Replace your cap and rotor first, it's cheap and easy. Check all your plugs and wires. Don't jump straight into the conclusion that it's the ecu.
By baade3
#307209 Ive replaced the distributor and plug wires and plugs. Bah.
By bks84
#307273 Is your check engine light on?
By baade3
#307274 No sir.
By bks84
#307376 what have you done as far as diagnostics besides swapping out ECU's?
By baade3
#307399 not far into the diagnostics. I've checked all my lines and shit when the engine is hot I actually found a could antifreeze lines to be leaking fixed them. Didn't work I put on a IAC, fuel filter, check the throttle body. like I said I'm lost.