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      02-18-2011, 12:48 AM   #1
Second Lieutenant
jahmed78's Avatar

Drives: 2007 BMW e90 335i
Join Date: Oct 2010
Location: San Diego, CA

iTrader: (6)

Question QUESTION: Straight midpipe or X-pipe w/connecting pipes?

I'm about to get a Procede tune and I'm currently running stock downpipes, midpipes, and a Remus race axle-back exhaust.

I understand downpipes are a great upgrade for performance but I defintely won't pass smog. So I'm thinking about freeing up some air flow in the mid section and getting a better sound by replacing the stock midpipe which has the secondary cats and resonator.

Do I go with straight midpipes (Borla or SuperSprint) or an X-pipe with connecting pipes? I'm not sure what the diff would be but the x-pipe set up is more expensive?

2007 335i e90 - black on black w/wood trim and iDrive

19" BMW M-Performance wheels, ST coilovers, m3 rep front bumper and skirts, CF Hamann rep diffuser, Remus Race quad exhaust, aFe DCI, LED angel eyes & DRL kit,
Appreciate 0