According to shoshop the stock MAF is 70mm and the stock throttle body is 60mm so I dont see how the Pro-M MAF is going to help us much. Are you guys buying them strictly for the different calibrations they have?


1997 GMC Sonoma 4.3 5 speed, 10psi Intercooled ATI Procharger, 3" Spintech exhaust, Went 13.6 at 105 mph.