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kchu221 · 01-07-2012, 10:06 AM

yea im running mxp double resonated test pipes! but i know forsure the whistling not coming from there cuz my installer was checking for sounds and it was coming from the y pipe...

01-07-2012, 10:06 AM	#3 (permalink)
kchu221 Enthusiast Member Join Date: Aug 2011 Location: torrance Posts: 391 Drives: 2012 BMW M3 E92 Rep Power: 14	yea im running mxp double resonated test pipes! but i know forsure the whistling not coming from there cuz my installer was checking for sounds and it was coming from the y pipe...