If you run the extreme and beat the truck, you'll be needing studs. I run the extreme with studs and it's for a lack of a better word "awesome". I can smoke my 35's if I'm not careful but it's funny watching people freak seeing a diesel doing that.

Spell check?

I can tell all of you 6.4 guys that as a 6.0 owner I was pretty "pissed" at DiabloSport for the lack of updates. I can give you some hope.......IF "Buck" is working on a tune for you, when he's done I have no doubt it'll be worth the wait. Buck worked with us 6.0 guys and I think for the most part ...

Ok, I understand.....however I just have a hard time thinking the EPA would harass you for turning off a error light. Its not like your disabling the EGR.......I already did that.

So, you can't make a custom tune to shut off my "check engine light" for a EGR error? SCT does it.

Buck, I did the head studs and EGR delete........could use something to turn off my "check engine" light.......please. Also, how hard would it be to add in a "tire size adjustment"?

Huge gain in economy? I'll give it a test run.

Just did the head studs and EGR delete so yea.....I agree something to turn off the check engine light and adjust the speedometer for larger tires. Next thing is while getting the studs and delete kit installed my mechanic found a cracked rocker arm. I'm not saying it was the new extreme tune BUT I ...

My diesel mechanic took my truck for a test run with me in it yesterday, it has Bucks extreme tune loaded and he had a lot of concern with it and the fact I don't have the heads studded. I drive very "sane" and conservative however he has concerns with the boost levels he was seeing. I'm getting the ...

Is that a tow tune or what?

Yea, I agree the tow needs some work on MPG.

Actually in theory, the extreme mode should give better mileage IF you can keep your foot off the petal. I have ran the new extreme tune and have found to be getting better mileage than I was with 9R13.

Well, yes.......any reason this tune "awesome by the way" keeps popping my turbo tube off and 9r13 doesn't? My rubber connecting tubes are new "3-6 months old" and the clamps are tight.

Well, my turbo tube has new silicon hose that are less than 3-6 months old and the new extreme tune keeps popping the turbo tube out. I went back to my 9r13 extreme tune and have no issues now.

Anyone testing the new extreme tune finding the 2nd gear shift hesitating some? Mine had been hesitating, also blew my turbo tube off........that was a shocker!