Every car is slightly differnet. There is no 'master tune'. Each one needs to be done specific to their cars. Temps, elevations, humidity all play roles. Don't they come with a 'Diablo Tune' for 93 gas? I'd use that.
The A4 is where you are going to see the biggest changes though. Play with your shift pressure and disable the 4->1 downshift while you are there. It breaks the tires loose sometimes when your brake hard. Not sure if you can disable some of the torque management with handheds or not. But if you mess with any of this, make sure you do a fluid/filter swap with some good fluid as well. Maybe even consider looking into trans coolers as well. I'm probally just being over cautious but its better then killing a trans.
2003 Corvette Z06 - MGW shifter, Corsa X pipe, Corsa Xtreme exhaust, Texas Speed long tubes w/o cats, PowerStop rotors/pads, Conti DWS tires, C6Z51 F&R sways, C5R headlights, tuned
04 GTO - sold
Last edited by jpalamar; 03-11-2010 at 12:49 PM.