N55 Newb: what do Perfromance Powerkit cars put down on a dyno?
Anyone done it yet? Searched this forum and googled endlessly with no concrete result. The factory 300hp rating is bullshit so I was wondering if maybe the numbers on the factory approved "tunes" was a bit conservative as well. Enjoying the N55 so far but know that I will be bored soon. Keeping full warranty cover is important so an aftermarket tune is not real desirable.