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cris · 10-18-2019, 08:27 AM

Hello guys, i need to know if someone put headers without cats and change pulley in his ZL1 without tune the car...…

i have LT headers with no cats and i want to install them…. the pulley can wait but i need to know if the stock tune can work with that mod.

and for last if is a 100% sure the we need to unlock the TCM to make this car tune correctly or if i can get inly the ECM tune without unlock the TCM.

thanks for the help.

10-18-2019, 08:27 AM	#1
cris Drives: 2010 Camaro SS L99 Join Date: Apr 2012 Location: usa Posts: 180	2018 ZL1 A10 Tune Hello guys, i need to know if someone put headers without cats and change pulley in his ZL1 without tune the car...… i have LT headers with no cats and i want to install them…. the pulley can wait but i need to know if the stock tune can work with that mod. and for last if is a 100% sure the we need to unlock the TCM to make this car tune correctly or if i can get inly the ECM tune without unlock the TCM. thanks for the help.