Give Mel a call. I was unsure if a baby moose or junior moose would work best for me. I don't tow, but at my elevation (6200ft) I needed to be able to get out of my own way. Every way out of here involves a pass and a gain of 1500 or more feet. I was told the baby moose could be turned up if more fuel was needed, but turning a junior moose down (or up) would mess up the calibration. I am happy with the baby moose. Mel calibrated it for a turbo. I have not turned it up. After almost 20 years of driving these things NA I can finally roll these passes in 4th gear, keep up and not smoke out the place.