BMW E9X 335/335is/335xi 3.5" Catback Exhaust DIM-24-8-8 This exhaust is for racing/off-road

This exhaust is for racing/off-road use only

For nearly 10 years now

Fits in the stock airbox space and utilizes the OEM snorkel

OEM (stock intake)

You can see in the second (standing start) data log how the boost drops off (especially in 4th gear)

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