BMW E91. Supersprint designs and manufactures the sports exhaust system for your BMW E91 entirely by hand. Thanks to our team of real experts you can customize and make unique the exhaust system of your BMW E91. We have always been designing and manufacturing special exhaust systems with one imperative: to increase performance! As on your BMW E91.
iTrader: ( 2) M340i. Simple. A stage 1 330i might be as fast as a 435i. The M340i is much faster. I drove an F30 340i, M340i and my stock 330i back to back and couldn’t notice a huge difference around town, even under WOT, between the 340i and 330i. BUT the M340i was noticeably faster than both cars.