I lost 2.5-3 gallons mpg using the srl tune also. I noticed my boost is running higher between 10-15 psi running 70 mpg, and my egt's are up also they are running 800-850, but with as far as the tune itself goes, powerwise, i couldnt ask for a better tune. I am currently talking to Matt about it also, I never tried any other tunes becides the race tune from SCT, and at 70 mph, my boost ran 5-8 psi, and the egt's where 650-700.