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Gotcha , so she’s probably mostly tired .

It is , that’s why I was confused why the truck is hitting those low .60 airmass cells .

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Ok guys extreme newb here , got this 05 Denali 6.0 with 300k plus miles as a little play project pretty much all stock besides a built trans . I THINK i took all the tq mngmt out and...

Guys I have a cousin in Grand Rapids MI that has a 99-01 stand alone harness in his obs silverado with a lm7 4l60e swap , he has an unlocked 04 ecu he purchased supposed to be unlocked and tuned for...

yea the timing tables are factory . Ill probably just run her on 93 or 89 . Also I changed the pe to command 12 flat . But your right could be much leaner if the maf isnt right.

Yea I?ve been a little scared to mess with fuel or timing on the work trucks just because I am not knowledgeable enough but since it?s on 93 I might try adding a degree or two till I see some kr ....

Well I tried the delco stuff ($50 a bottle lol) and the sea foam with no luck still has KR stock Tune … I decided run it down to less than a 1/4 tank put in half tank of 93 and took care of almost...

Yup got it , I’ll touch back this weekend after I try it . Thanks again!

Thank you for the advice .. I am going to try that this weekend . I?ll stop by the dealer tomorrow afternoon and pick up that top end delco cleaner . She did smoke pretty dang heavy after the sea...

Yea your right about the passing seems to do better with less throttle .. I sea foamed the top end today didn?t make any difference, still pinging and chattering under load I am afraid to do a wot...

No doesn’t seem to ping cruising .. I bet your right about the carbon though, put new plugs in it (OEM) last week and they looked original 180k miles kind of caked up . I’ll probably put some seafoam...

It’s actually pinging though you can hear it would sensitive knock sensors cause that ?

Hey guys first off i hope i attached the files correctly , Newish to hp tuners not here to make more power or anything i purchased hp tuners because 90% of my construction fleet is gas 6.0 2500s and...

Ya luckily I don’t tow with it just daily commute. Come late spring I might head out to the junk yards to look for a sierra Denali rear end or v max truck .

I guess before anything I’ll TRY making the changes but … factory it’s wanting 73 mph shift and even if I take 2 inches off the tire on the bc table .. it’s still going to want almost 100mph in 2nd...

Lol no , I put in 31.91 for total tire size since it’s a 275 55 20 . With a 3.23 gear

I did just seems real real high mph

Yup I sure did truck does have a 3.23 gear .

Thanks for the reply guys . Yes the truck has a 3.23 gear in it with 20 inch Denali take offs . And yes I matched everything up in the tire wizard first on Hp tuners . Just seems like I’d be bouncing...

Hey guys new to this stuff and Iam trying to do just a basic tune for a 05 4.8 crew cab 4l60e I drive daily . I was trying to use the BC tool but I am obviously doing something wrong because when I...