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PLCZ4MC · 09-16-2017, 10:19 PM

I heard some RPI before on z4m and is louder than the SS race true, but not like a huge different. Give you SS race a change, if you want even more noise for a low price maybe you can delete the resonator in the original z4m xpipe.

09-16-2017, 10:19 PM	#2
PLCZ4MC Proud E86M Owner 79 Rep 650 Posts Drives: 07 Z4M Coupe Monaco Blue Join Date: Sep 2013 Location: South California iTrader: (4)	I heard some RPI before on z4m and is louder than the SS race true, but not like a huge different. Give you SS race a change, if you want even more noise for a low price maybe you can delete the resonator in the original z4m xpipe.
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