BMW M3 Forum (E90 E92) - View Single Post - Is this statement true about the Eisenmann Race

crispy tofu · 02-08-2013, 05:55 PM

If it's just the axel back mufflers, don't count on any HP or Torque gains - you may get a couple, but it's really insignificant. When you also do the x-pipe, changing to hi-flow cats or no cats, and get a tune, that's when you'll see some gains.

02-08-2013, 05:55 PM	#2
crispy tofu Second Lieutenant 15 Rep 200 Posts Drives: 2018 M2 Join Date: Apr 2012 Location: Bay Area iTrader: (1)	If it's just the axel back mufflers, don't count on any HP or Torque gains - you may get a couple, but it's really insignificant. When you also do the x-pipe, changing to hi-flow cats or no cats, and get a tune, that's when you'll see some gains.
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