Re: egr delete or upgraded cooler or both
I would really look into the IPR
delete kits. I usually use River city deletes in my shop for the 6.0s and the 6.4s and sometimes rudys diesel. But after looking those up my next 6.0 delete/head job I do is going to be with that kit... The upgraded coolers still have a chance to fail as well as do choke down the motor. If you have smog testing yes after marker cooler, but if not I would highly recommend the delete and a tuner. Even if you don't do a tune all you will have is a CEL
but you will still get a mpg
increase just off the delete.