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i have test pipes with OEM rear...
when warm, and in normal driving conditions, it sounds 98% stock.
cold start is a little bit louder than stock.
wide open throttle is loud (particularly, WOT between 3000-4200 rpm is loud/raspy/high pitched in the lower gears especially.)
in any and all conditions, my setup is considerably less 'raspy' than the one in the above posted video. hope this helps!
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