10-30-2025, 11:48 AM
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#5
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GPI Sales Consultant
Drives: 2011 Camaro 2SS SGM
Join Date: Jul 2016
Location: Weedsport, NY
Posts: 3,016
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Quote:
Originally Posted by mixitup
the cars has a BTR stage 2 cam, Roto Fab CAI, 10% over drive crank pulley, 2.39 super charger pulley, DSX flex fuel, JMS fuel module, Kooks headers and cats.
I drove the car 7000km's last year with no issue until this spring with the 219B air/fuel mixture imbalance code. Turned out I had 1 bad fuel injector flowing at 900 instead of 1000. At the same time I started to experience this 1250 - 1400 rpm surge/fluctuation at light throttle in all gears (automatic). Tuner re-tuned for the new set of FIC1000 injectors, and can't fix this idle surge.
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If it wasn't a problem, then had a mechanical issue followed by a retune and now the mechanical issue is resolved and now it has a driveability problem I think that probably points at the tune. I assume you've discussed with your tuner? What is there explanation for the change in behavior?
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GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
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