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i had mine done about 70 k ago and at that time had the injectors massaged for 50hop or so. mostly hydro machined to clean up the nozzle.

i run no chip and have all factory settings in place and my rig is starting to run rough too

i have the dealer check all of the vitals and all is in the right parameters but still i suspect the damned injectors, and if your chipped and have boosted the rail pressure the chances for the injector case to leak increase, even more i hope its not your in jectors , i hope its not my injectors too
damn them GM and their junk......
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