mam fmic on 2003.5

[atticus]

Ok I've search for about a half hour on this just asking for a little help.

Here's the deal I'm working on a 2003.5 MSP bone stock just install the mental addiction FMIC with the hard piping and hks bfv and boost sceiences bpv. Took it for a test drive after installind tese compents and it falls on its face at about 3000 to 4200 and what i mean about falling on its face a severe jolt, stumble or shutter. We've checked for leaks incorrect installation and just about everything else still this problem.

Never did this before until the FMIC upgrade
Also dies out something after hard acceleration
thanks for any input

 

[Bigg Tim]

Maybe it's because there's not the "restriction" that the stock ECU is programed around. You now have hard pipes and a hell of an intercooler, much more efficient. MSP's are a whole seperate beast.

 

[atticus]

ok here the deal checked plugs very black and sooty which tells me car is running rich also realized car has been reflashed still making a extreme jolt and even worse when i turn the boost to about 8psi

 

[changedman]

have you reset the ECU?