Just purchased 94 flair and am now aware of the 6.5 gmc diesel. Am anticipating problems will arise. Hope you guys (members) will have my back with solid advice. Thanks in advance. Cowboyjim
Welcome! As there is a high load on the MH you will find a BIG MPG improvement by using a bigger better turbo on that engine. The OEM GMx turbo chokes the engine over 2200 RPM.