Breaking up under hard acceleration? Just installed quadzilla.
I installed a Quadzilla Adrenaline, and FASS HD 150 about a week ago and have been having some isues with it sputtering suring hard acceleration. I am not getting the defueling warning on the quadzilla, but it does sometimes drop levels on its own, then goes back up on its own right after.
My turbo wastegate is not connected, and I believe it just stays shut all the time. My autometer boost gauge will go up to about 28-32 PSI and violently shake back and forth around there. If I had the quadzilla setup to defuel anywhere under about 42 PSI it would start to defuel on me due to boost. Is the shakey gauge an indicator that its leaking somehwere and I need to go over it?
I'm also curious as to why I never got a code for overboost before the new setup was installed. I suspect there may be some sort of boost fooler, or possibly aftermarket programming on the PCM? I recently purchased this vehicle, and the old owner swapped this motor and ECM/PCM? in only about 2K miles before I purchased it. The motor is out of a 2002, the truck is a 99 so I figure at least the ECM, and possibly the PCM was swapped as well? Worried I may have some sort of programming stacked and I don't know it. A friend of mine said he thought it smoked more than a stock cummins should before we put the quadzilla on, and I had a code come up forunknown programming, which I suspected was due to the high idle.
My main issue now is while accelerating hard on level 5-7 it will break up and a loud popping backfiring type of noise will happen as it does this. It does not say its defueling on the quadzilla pulse V2 when this happens. Just looses power, off and on along with the popping sound. Also, if I run iut hard on 7-8 when I slow down the motor will shake and the rpm will jump up and down about 100 RPM for a few minutes till it clears itself up.
I'm worried I may hurt something if I keep messing with it without knowing exactly whats happening. Any advice would be great. I know there's a lot of info here, but didn't want to leave anything out.
1999 QCLB 3500 4X4 - 02 motor, Autometer Pyro/Boost/Fuel, HX35, ARP Head Studs, Quadzilla Adrenaline, BD Speed Elim. W/RAD, FASS HD 150, BHAF, 271 T-Case, DTT Triple Disk, DTT Valvebody, Extra clutches and a few billet parts, 7" Aussie Cut stacks, traction bars.
Last edited by BigBadTurboI6; 01-14-2011 at 03:34 PM.