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2013nismo · 01-16-2015, 04:35 PM

Hey guys. I installed my FI resonated test pipes last week. I have their cat back with 18 resonators. We took it for a test drive and sounded fine, but I noticed after I left when I push the car hard it makes this high pitched vibrating sound. It sounds like it is coming from where the test pipes are, but i could be wrong.

Is this sound normal for resonated test pipes? I have to wait till monday to bring it to the shop.

01-16-2015, 04:35 PM	#1 (permalink)
2013nismo Base Member Join Date: Dec 2013 Location: St Pete, Florida Posts: 21 Drives: 2013 370z Nismo Rep Power: 11	Resonated test pipe noise Hey guys. I installed my FI resonated test pipes last week. I have their cat back with 18 resonators. We took it for a test drive and sounded fine, but I noticed after I left when I push the car hard it makes this high pitched vibrating sound. It sounds like it is coming from where the test pipes are, but i could be wrong. Is this sound normal for resonated test pipes? I have to wait till monday to bring it to the shop. __________________ FI TDX catback with 18 resonators, FI resonated test pipes, Stillen Gen intakes, z1 plenum, Odyssey PC-680 Battery, UpRev 334/267