06-02-2014, 04:52 PM | #1 |
Hide! My wife's coming!
Drives: 2013 Chevrolet Camaro ZL1 Join Date: Jun 2011
Location: Las Colinas, TX
Posts: 1,442
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NPP exhaust rattle
When accelerating slowly from a stop in 1st and 2nd gears between 1k - 2k. I can hear a rattle coming from the exhausts. The rattle reminds me off the 4cyl fart cans. At WOT and cruising speeds it isn't there. Only during moderate acceleration do I notice. It's much loader from the outside if you standing behind the car.
Anyone hear about this or experience it themselves? Wondering what it is. Thanks Sent from my iPhone using Tapatalk
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2013 Camaro ZL1 Convertible CRT - 630 RWHP / 620 RWTQ - ADM Performance Built/Tuned - ZL-700 Package - LS9 CAM - Lingenfelter CNC Ported Heads - Stainless Power Headers
Last edited by Camero5; 06-02-2014 at 05:26 PM. |
06-03-2014, 07:24 PM | #2 |
Hide! My wife's coming!
Drives: 2013 Chevrolet Camaro ZL1 Join Date: Jun 2011
Location: Las Colinas, TX
Posts: 1,442
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Dealer is replacing under warranty.
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2013 Camaro ZL1 Convertible CRT - 630 RWHP / 620 RWTQ - ADM Performance Built/Tuned - ZL-700 Package - LS9 CAM - Lingenfelter CNC Ported Heads - Stainless Power Headers
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08-18-2015, 10:52 PM | #3 |
Join Date: Jul 2014
Posts: 112
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Did you get this warrantied? Mine started around 800/900 miles
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08-19-2015, 10:32 AM | #4 |
ZL1 # 1307
Drives: 2012 Camaro ZL1, 2008 Hummzilla H3 Join Date: Nov 2010
Location: Central New York
Posts: 1,911
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Mine does it at 2200 rpm in first and second gear during moderate acceleration.
Note: if I close the valves it doesn't do it. |
08-19-2015, 11:57 AM | #5 |
Join Date: Jul 2014
Posts: 112
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