issue after installing mods need help fast
06-09-2014, 08:59 PM
#1
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issue after installing mods need help fast
So I just installed my 60lb injectors my ls4 throttle body with adapter plate and zzp 1.0 pcm after install i the car has been acting terrible i preformed the crank relearn and made sure all the injector seals were completely seated now i have a very lumpy idle with intermittent idle hunt also now when giving around 50-60% throttle it bucks real hard and can't be controlled until letting completely off the gas and slowly trying again and I'm throwing a p0300 for a random multi misfire and also when in gear doing about 50 and completely letting off the gas there is a strange growling noise that occurs until putting the car in neutral before this I had already installed a injen cai zzp heat exchanger dual pass end plate 2.8 pulley Hurst short throw and stage 2 clutch with light weight flywheel someone please let me know what I can do I'm stumped
06-09-2014, 09:50 PM
#2
Very hard to decipher that post... The car sounds like there is a tuning issue. Possibly try putting the stock parts back first? It sounds like something is disconnected or not plugged in, any chance of that? Any other codes than the P0300? How do the plugs look? Wet with fuel?
06-09-2014, 10:32 PM
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The pcm is supposed to come with a canned tune i just put the plugs in 2 months ago I made sure everything I just installed was connected just to be sure the throttle body connection and vacuum line are both secure I sprayed brake clean at each injector and never got a bog down or high rev and the pcm connectors all latched down this is what confuses me the only other code I threw was directly after initial start up for the crank re learn but I preformed that and it never threw the code again but I still get the random misfire intermittently
06-15-2014, 03:23 PM
#6
I had the same thing happen to me, check your MAF, and make sure your filter on your intake is seated properly. My filter was not on 100 percent and it lead to many of the symptoms you described. Check all the way around your filter because what happened to me is that it appeared to be seated in front properly, but after running my hand around the back, i felt a hole because the filter had slipped off in the back.
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