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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 03-15-2012, 08:25 PM   #1
Laybourne
 
Drives: 2012 Camaro 2SS
Join Date: Mar 2012
Location: Chino CA
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Xpipe noise?

Just bought a 2012 2SS 6.2 V8 auto trans. Just had flowmaster 40 series mufflers, removed the resonator and an Xpipe installed. Has anyone had any weird noises from the Xpipe? When cruising at a low rpm and the throttle is slightly pressed the exhaust sounds as if its loading up and it makes a gargled pitch noise then very quickly goes back to a normal sound. Any thoughts?? Anyone else hear this and is it normal?
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Old 03-15-2012, 10:17 PM   #2
Dertyboi
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That's the AFM kicking in it drops it in to four cylinder mode
I did the resonator delete for a x pipe and it was horrible until tune it out
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Old 03-15-2012, 10:56 PM   #3
Laybourne
 
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If I get rid of the xpipe and go to straight pipes will that get rid of the noise?
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Old 03-16-2012, 09:04 AM   #4
adamgl
 
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Prob. not. Have to get rid of AFM. I did on mine and got better mileage after a tune with V8 all the time.
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