BMW F80 M3 catless downpipe content ahead. One of the best things about owning a turbocharged car is the fact that you can gain a lot power by just freeing up the exhaust flow. The best way to do this? Get a downpipe, intake and exhaust system! The new M3 and M4 turbo inline-six (S55) engine produces 425 hp with 406 ft-lbs of torque, but an aftermarket downpipe can yield up to 6% horsepower and torque increase.
RaceWerkz Engineering took early delivery of their F82 M4 and F80 M3 (yes both of them) and got a head start on their F8x R&D program. Today I got a chance to see, hear and feel their new prototype catless downpipe for the F80 M3.
And a bonus picture of their E92 M3 track car!