I just finally got my 42# lightning injectors and matching Pro M in my car and untill I can get my wideband on and tune it, I am using my ATI FMU (adjustable bleed type) My car seems to have a really bad studder between 3500-4400rpm (just building decent boost) and then it seems to clear up and pull to redline. I have been told that it is the FMU causing this I have adjusted it both ways and the problem still exists, any of you guys have this problem? Any idea what else it could be? It will even hiccup through the intake every now and then...
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