In 1989, GM selected Banks as the 6.2L factory-turbo option, and remained so until GM released their own 6.5L turbo-diesel. To this day, Banks Sidewinder out-performs GM's 6.5L factory-turbo�or any other turbo. Banks' ultimate upgrade for 6.2L workhorses provides best gains of +60 hp and +115 lb-ft torque, plus 10% better fuel economy. That's no smoke.
