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WongBob · 01-12-2010, 07:46 AM

Everything you mentioned will kill the warranty. For tuning though you can always purchase a second ECM to swap in. If it breaks take it back to the dealership with the stock ECM. GM can tell how many times the ECM has been flashed... thats the reason for a second unit.

01-12-2010, 07:46 AM	#3
WongBob Dig Race? Drives: '13 AGM 2SS/RS 1LE Join Date: Dec 2009 Location: Minden, LA Posts: 316	Everything you mentioned will kill the warranty. For tuning though you can always purchase a second ECM to swap in. If it breaks take it back to the dealership with the stock ECM. GM can tell how many times the ECM has been flashed... thats the reason for a second unit.