Originally Posted by epjfsa

I've posted this in other related threads before, but there's an unconfirmed and uncited rumor that these engines adjust to fuel octane and actually make more power with higher octane fuels (as compared to a normal car, which simply wouldn't). So before I would spend the money, I would need to see dynos and proof of three things.

1. Change in drivability isn't just remapped throttle (less roundabout way of doing what a pedal commander does)
2. Change in power/torque is from a tune, and not just running higher octane fuel
3. A real A to B dyno from multiple vehicles, not some unrealistic cartoon looking thing on the vendor's site