5.3L MOTOR
#1
5.3L MOTOR
Does my 2004 Z71 need much back pressure from the exhaust...... i just want to know if i take my muffler off for more flow, will it harm the motor??? thanks!!
#3
RE: 5.3L MOTOR
I dont know how much back pressure your Z71 needs and not sure how much back pressure you will loose just removing the mufflers. I doubt it will hurt your motor. It will be load as hell though.
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