Just saw this in this months BMWCar magazine...
"German tuning firm Noelle Motors has recently brought out its latest tuning package for the twin turbo '35' engine range, which it claims to boost power to a massive 401 bhp. Even more impressive is the fact that Noelle can extract so much power from the car using nothing more than a pair of sports cats, an engine cooler and a new engine map, with no modifications required to the drivetrain. Peak power is developed at 6250 rpm, and maximum torque, now up to a mammoth 390 lb ft, peaks at 2750 rpm. While Noelle Motors hasn't provided any acceleration figures, it has provided a new top speed, for the 335i Coup'e at least, which it says is 194mph. The conversion costs Euro 7890 so it's not exactly cheap, but if it delivers what it promises then the twin turbo speed freaks world over will have a reason to rejoice. For further details, have a look at
www.noellemotors.de."
Makes the Superchips mod look poor in comparison!