With the Thermal cat back system is the turbo MUCH louder -m-
12-22-2003, 01:34 PM
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probably only noticeable to the driver...unchipped, not much if at all...-m
but chipped, I noticed the turbo spool (whine) is slightly more prominent after the exhaust install. More sound comes from chipping than from the exhaust though, by far.
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