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Who has a resulting raspy exhaust resonance @2600-3000 rpms on acceleration ?I've been asking some people by private email...some have the noise, others don't. I'm looking to establish a pattern between those with noise and those without, and the type of muffler system they have. I have the Stillen system, tried swapping the X-pipe for an H-pipe with no success. Thanks for any info !!
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