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seriously killer price. do note a k&n recharge kit will be needed to keep the filter well-oiled every 5000 or so miles. want to chime in tt i'm more than satisfied with my gruppe m, even if it is a very steep bit of kit. it certainly adds depth and volume to the s54's growl, and i've noticed an improved throttle response after giving the dme a few days to completely adapt. i can't comment on any power gains, however, since i did not do a before/after dyno for this. then again, power gains would probably be minimal, at best.
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