I have a 2" pulley on mine currently with most of the URD kit minus the FTC1 (Using an SAFC instead). I am running about 10-11 psi and i only get ping when in 4th and 5th gears below 3000 RPM (which i believe is when the knock sensors kick in) Did you ever reset the computer after installing the new pulley and retuning? Sometime it helps to have the truck relearn the maps when making a big change like that... but not a must. Do you still have the "free FMU" setup connected or did you disconnect that once you did the fuel upgrade kit?


1999 4-runner
TRD Supercharger, 5 speed, 2 inch pulley, Dual 2.5" exhaust, AEM Brute Force Intake, Supra Injectors