Sawboy
Full Access Member
Turbo back MBRP exhaust gave me 1mpg, XCAL and tunes from Spartan gave me another 2.5
Just got back from towing my boat to and from WI. Gear and boat probably 3k. Not a lot, but towing a load nonetheless. I got 17.5 mpg. That was at 60 mph, 2,000 rpm with my 4.30 geared duallie.
The xcal REALLY improved the mpg's when towing. Towing my 65 Pontiac and trailer I get 13.5 - 15 depending on wind, and that's a 6,500 load.
Just got back from towing my boat to and from WI. Gear and boat probably 3k. Not a lot, but towing a load nonetheless. I got 17.5 mpg. That was at 60 mph, 2,000 rpm with my 4.30 geared duallie.
The xcal REALLY improved the mpg's when towing. Towing my 65 Pontiac and trailer I get 13.5 - 15 depending on wind, and that's a 6,500 load.