ISX and Bypass Oil Filter Systems

[Mrkentee]

Rawze Wrote:People should stop obsessing about the damn oil like mad and start obsessing about not lugging the engine into oblivion. - Bottom end torque is the killer of ISX’s and other engines, and it can totally be prevented. >>Obsess about using the right RPM (above 1500+) when you have to climb hills and push the fuel pedal hard. Stay away from big torque on the low rpm bands. Re-gear the truck so that it can be driven this way too.

I keep rpm’s up but also keep my foot light enough to stay around 30 lbs of boost, thinking that’s better than mashing it and pushing about 40 lbs. I would definitely climb hills faster doing it that way. Is my thinking right? Also, I used to hear it said here to climb hills at 20 lbs of boost, and I could do that with the tune I had at that time. I couldn’t do that now.