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      03-22-2011, 10:33 AM   #4
PROcede it and Call it a DAY

Drives: 2011 135i DCT, 2011 335i
Join Date: Nov 2010
Location: California

Posts: 164
iTrader: (0)

This is true but with us having the procede/tune plus mods, the flow rate on a 3 inch or a 3.5 inch really makes minimal difference for the twin scroll turbo. And when we add meth, fmic, and nitrous the 3.5 inch will hold plenty.