BMW M3 and BMW M4 Forum - View Single Post - Exhaust system database for the M3 and M4!

dmk08 · 09-25-2014, 03:48 PM

So has anyone seen the RPI exhaust being sold in the vendor section? It's talking about 32whp from mid pipe and cat-back. Are any of these other systems seeing big gains?

http://f80.bimmerpost.com/forums/sho...5#post16689675

09-25-2014, 03:48 PM	#96
dmk08 Gone Fishin’ 7318 Rep 12,125 Posts Drives: Walks Join Date: Jul 2012 Location: Atlanta iTrader: (19)	So has anyone seen the RPI exhaust being sold in the vendor section? It's talking about 32whp from mid pipe and cat-back. Are any of these other systems seeing big gains? http://f80.bimmerpost.com/forums/sho...5#post16689675
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