Borla Race Exhaust BMW E90 E92 335i Porsche and it is this breakthrough

and it is this breakthrough in design that produces quicker valve response

Due to the different number of sizes available

Muteki SR35 Closed Lug Nuts

Invidia now offers their Dual N1 Single Layer SS Tip Catback Exhaust for the new STI (08+) and WRX (11+) Hatchback

This quality of stainless steel is used on all pipework and the total construction of the silencer

Borla Race Exhaust BMW E90 E92 335i Porsche and it is this breakthroughThis aggressive race only exhaust for the BMW E90 E92 335i includes both mid and center pipes (bolt on from the downpipes back) which eliminate the secondary catalytic converters. This eliminates a HUGE amount of exhaust restriction, opening the door for huge power gains, particularly on cars with increased boost. Every Borla exhaust is made in the USA using the highest grade T 304 stainless steel. Includes mid pipes, center pipes, and rear muffler