With those gains I’d say it’s well worth deleting one. Being as I know Jody’s friend as well, I believe those numbers. I have no doubt believing it because I’ve also experienced it first hand with [USER=19149]@edward[/USER] truck. 14mpg towing a heavy trailer shaped like a billboard, and regular 22mpg empty using cruise and a light foot, all deletes on a 40HP tow tune. All hand calculated.
However I will say, it worked well for a while but eventually the clutch started to slip with regular driving. He went with a Southbend and upgraded the master/slave while at it. Never looked back.
