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Well, I now have experience with the sandblaster sound. APR chip and APR exhaust.

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Old 07-12-2007, 06:24 AM
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Default Well, I now have experience with the sandblaster sound. APR chip and APR exhaust.
I never had it on my sedan with chip and stock exhaust. Seems like there is no conclusive combination that causes it or doesn't cause the sound.
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Old 07-12-2007, 06:26 AM
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Default stfa .... it's the exhaust .
of course you don't have it on a stock car exhaust .. LOL
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Old 07-12-2007, 06:36 AM
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odd that you didn't have it on a chip'd S4 with stock exhaust
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Old 07-12-2007, 06:53 AM
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chip & stock exhaust
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Old 07-12-2007, 06:57 AM
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yeah, I know. Weird.
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Old 07-12-2007, 06:59 AM
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Chip and stock exhaust on my sedan. No sandblaster.
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Old 07-12-2007, 07:01 AM
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that stock exhaust is really quiet .
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Old 07-12-2007, 07:29 AM
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APR Chip and Stealth Exh. here. No sandblast. I hear once you go 3 with APR exh. sandblast is common
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Old 07-12-2007, 09:21 AM
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APR chip, DPs, exhaust, cats in... no sandblast. I heard test pipes cause it?
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Old 07-12-2007, 10:03 AM
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Default The test pipes with APR downpipes are an all together different issue, thats sonic resonance.
As I understand it, there are two different noises, caused by two different configurations. The sandblaster noise is caused by running a chip with stock downpipes. The test pipe issue is a rattle at specific rpms (approx 2800) with APR test pipes installed.
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