does the fact your running a DHP v1 PCM with a stock pulley mean anything?!?
cuz according to 3800perf.....
"Developed with the average 3800 enthusiast in mind, this calibration has been designed and dynamometer tested and proven for the following vehicle modifications installed:
- 3.4” - 3.20” pulley
- Cold air induction system (brand not applicable)
- Cat-back exhaust system (brand not applicable)
- Premium fuel (91+ octane)
*NOTE: This calibration is NOT intended for stock 3800 powered vehicles. Additionally, premium fuel IS required."
