Originally Posted by
Kennedy
Mark's is a unique situation. He originally had the same base tune as you do on his other truck. The thing is, he felt it was unrefined and too aggressive. That is uncharacteristic of the tune in fact I hear the exact opposite. The decision was made to back it down and at the same time we migrated to a different truck. After talking some more with Mark, I think I may have figured something out. My 2005 has a touchy pedal. It can be hard to leave a stop and on a rough road it can be tough to hold speed without jerky acceleration on bumps caused by unstable pedal. Mark reported much the same. What I figure I have is a pump regulator getting bad. I can hear my idle roll at times and of all things when I put my 4 way flashers on it is more noticeable. Quite often when I back out of the shop it feels like it bounces like a nasty warped rotor. There is a good probability that his other truck parallels my 2005 as my 2007 runs VERY smooth.
Hard to say if a tune update would be in order for you. I just scaled it back a bit on aggressiveness. EGT per power application should be the same, but the bigger tune has more if you go deep...
John,
Don't get me wrong, I love the tune you provided. You know the senario, enthusiasts always are looking for something a step beyond and you offer the best to date. But I just want you to to provide me with something in the neighborhood of 1200 ft lbs that can pull my fifth wheel at any speed up any grade and not genenerate EGT's above 600degrees. I'm sure if you put your mind to it you can offer it at a bargain price.
Luv ya John,
Randy
2011 Chevy 2500HD LML
Red with Dark Cashmer Light Cashmer
Superglide 5th wheel hitch
Bed Rug
Jack Rabbit Full Metal Jacket bed cover
Aries 4" oval step rails
LBZ now lives in Wisc.