Opinions on gliders

[Texasdude74]

(03-15-2017 )Bsmith106 Wrote:  What is the significance of the 550 tune on the 625 Cat? Does the 550 tune have higher fuel rates? I know the 625 has different injector part # than the 475-550.

That's pretty much it. Cat didn't want you to be able to throw a 625 tune in your 475/550. Doing so makes for a dog and crappy miles per gallon. Throwing a 550 tune in a true 625, with its' cam, turbos, injectors and compression; makes for a monster with many smiles per gallon.