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'14-ELLIE · 04-17-2015, 12:31 PM

Is it true that the SW retro chambered (ZL1) can actually hurt the dyno numbers when used with a TT?? I ordered the 3" catback to improve the flow over my 2.5" NPP on my 1LE, but now I am nervous it may actually hurt me. Any insight?

04-17-2015, 12:31 PM	#26
'14-ELLIE Drives: 2015 2SS/RS 1LE Join Date: Jul 2014 Location: Orlando, FL Posts: 331	Is it true that the SW retro chambered (ZL1) can actually hurt the dyno numbers when used with a TT?? I ordered the 3" catback to improve the flow over my 2.5" NPP on my 1LE, but now I am nervous it may actually hurt me. Any insight?