Originally Posted by CombatNinja
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.
Why not go the Dinan route? I mean you'll lose your "CPOabilty", but Dinan matches the BMW warranty, and you'll get more power than with a PPK.
I had the PPK and I was unimpressed.
It's just a thought. I love my Dinan stage III.
The only trouble is, it isn't cheap, and for stage III you do need the upgraded oil cooler and intercooler, which can easily take you into a few thousand. You can easily do stage II without any further hardware upgrades and it will provide more torque and horsepower than a PPK.
Peak Horsepower: 355 @ 5300 RPM
Peak Torque: 401 @ 3500 RPM
Peak Horsepower: 373 @ 5300 RPM
Peak Torque: 408 @ 3500 RPM