A few months ago we showed you the magnificent work that G-Power did on the BMW M5 Hurricane RR, boosting it to a whopping 830 horsepower. Today, we're back with another BMW, this time the 1M Coupe. G-Power used their own supercharger on the 3.0-liter straight-six, tuned its own engine software, and put in a new more efficient, lighter exhaust. The final result is an upgrade from 340 horsepower to 435, putting it 15 ahead of the M3.
[via G-Power]
