mkirsch wrote:
Someone's going to say it, so it might as well be me:
Getting rid of the poorly-executed emissions equipment on these engines would accomplish the same thing without an expensive fancy piston.
Lots of people have tried it, and it works okay for some, but other report no improvement after deleting.
My old 24 valve 2001 Cummins averaged about 10 mpg, compared to my new undeleted 2018 Cummins with more horsepower and auto transmission which averages about 9.0 mpg. Oh yeah, and pulling a 2,000 lb. heavier 5th wheel.
