GIAC X Chip with adaptive tuning. When the car is started, the ECU takes a minute to determine type of fuel in the car (91/94/100) and adjusts a/f, timing and boost levels accordingly (boost is electronically controlled in my car).

End result with 94 octane is ~320hp, 385tq @ 18psi; up from 250hp/260tq @ 7psi stock. With race gas, guys are getting an extra 10hp and close to 20 ft/lbs.

To say it now feels like a completely different car would be a huge understatement. It's now the first car I've owned that litereally sucks you into the back of the seat when accelerating. I cannot fathom why the car did not come stock like this.

Now where can I get me some race gas?