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      06-03-2009, 11:29 PM   #6
rcracer_tx
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Drives: BSM 135i
Join Date: Apr 2008
Location: Texas

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If you want a louder car go for it, but taking the secondary cats off of this car has shown no gains or 2-3whp... The catted midpipes don't add a significant amount of backpressure at the power the stock turbos can sustain, so if you want a better sound I would get an axleback system because having the smell of being catless and the same gains as going catless...
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