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Team_STILLEN · 10-29-2015, 01:03 PM

There is a difference between test pipes and high flow cats, but it is not that big of a difference. You could also look into Resonated Test Pipes. Will quiet them down a bit and remove some of the rasp.

10-29-2015, 01:03 PM	#11 (permalink)
Team_STILLEN Base Member Join Date: Dec 2013 Location: Costa Mesa, California Posts: 216 Drives: 2009 370Z Rep Power: 21	There is a difference between test pipes and high flow cats, but it is not that big of a difference. You could also look into Resonated Test Pipes. Will quiet them down a bit and remove some of the rasp. __________________ Financing with Affirm now available!!! *STILLEN* \| Robin \| Performance Specialist \| rmoses@stillen.com\| 800.576.2131 x133 \|