Re: Best 238/100's?
The 38R is meant to replace the factory turbo. In my opinion a set of stage I's is what the 38r is happy with. Anything more and drive pressure becomes an issue. I would be looking for a bigger turbo if you want to run 238/100's
Early 99 Crew Cab,LB , 4" magna-flow exhaust, S&B Intake, FASS Pump, HRX, Regulated Return, Riff Raff Billet Plenums, ARP Studs, 910 springs, Chromoly Push rods, OBA, Carson Stuaffer t4 mount and a Borg warner s64.5 sxe Turbo, PIS 175/80's, T-500, ISSPRO EV2 Gauges, BTS Trans!