BMW M3 Forum (E90 E92) - View Single Post - Front Section / X-Pipe Exhaust Diameters

masitr · 03-07-2010, 08:42 PM

I was wondering if 2.75 was currently used.

Is the loss of toque with larger pipe due to a mismatch between ECU Calibration and part. Obviously most manufactures make products that match the factory calibration (AKA Stock Vehicle) and not for max power after a proper tune. Have manufactures and tuners tried to tune with a larger system that could prove this? With only flashes available engine performance would seemingly be limited.

03-07-2010, 08:42 PM	#4
masitr Private First Class 23 Rep 148 Posts Drives: E92 M3 6MT Join Date: Jan 2009 Location: NW Ohio iTrader: (6)	I was wondering if 2.75 was currently used. Is the loss of toque with larger pipe due to a mismatch between ECU Calibration and part. Obviously most manufactures make products that match the factory calibration (AKA Stock Vehicle) and not for max power after a proper tune. Have manufactures and tuners tried to tune with a larger system that could prove this? With only flashes available engine performance would seemingly be limited. Last edited by masitr; 03-09-2010 at 05:49 PM..
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