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ok i did a few changes to the tune and did another full throttle from a stop log... any thoughts? It feels better, but not where it should be i dont think. I put the Camaro SS advance tables in...

Ill try that... should I do EVERY table? idle advance, High Octane, low octane, and base IAT spark correction, base ECT spark correction, and max torque timing? I have EGR disabled so EGR timing...

ok i looked at the advance tables and compared them to the log file. I added 1 degree to the blocks in that area and I will try to log another pull and see what happens.. Ill add 1 deg at a time...

I understand what you are suggesting.. but could you be a little more descriptive on the actual procedure? And thanks for your help. Also.. why only in that RPM range? Is it not as safe to add timing...

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ok i did 2 logs...

first is from a dead stop full throttle through first and most of second gear
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Second is a 30mph roll full throttle
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Here is my config file
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speed south has a very good tuner... I used to wrench there and we have turned out some pretty nasty LS cars...

Hi all,

I have a 98 tahoe with a 5.3 swap. 4l60E trans
Mods are Pacesetter Longtubes, Hot Air intake, No Cats, 3" dual Exhaust back to 2 Thrush Welded mufflers 2.5" out to turndowns.
E Fans, and...

when does 2.25 come out? I just purchased HPtuners less than a month ago and it was 2.24

im having the same issue with an 01 pcm in a 98 tahoe... Ive found 100 different suggestions on how to fix this... all seem to conflict eachother and im not sure which is correct.

yeah definately need to get the tune sorted out. the tune in there now is for a 6.0 Also Maybe its just me but your target idle above 100degrees seems low for a cammed engine. the correct tune...

wiring issues maybe? Not sure why the log isnt showing Long term and short term fuel trims or Intake air temperature, or 02 duty cycles. those things have a lot to do with diagnosing these...

Ive got to start prefacing better haha. I used to have the Intake up behind the headlight and that is when it started doing it, so I moved it back to its current location... Anyway I built a cold...

i guess i should have prefeaced that my intake is almost in the stock location and I have dual 15" flexalite Electric Fans... there "should be" a ton of airflow in my engine bay even at idle.. and i...

LS 5.3 swap in a 98 Tahoe. Still working out the kinks to get it running right. I have sloppy 02s that i am replacing waiting on new ones to arrive.
The problem is my IATs. for some reason they...

thank you

ok thanks for all of the info.. when you say wire it in to the egr signal you are referring to the signal wire into the ecm right? and then i would just look at the egr values in the scanner? i...

here is a log from a drive i did today. i dont have pro so i cant do logs through vcm scanner.. so i recorded my screen. any idea why my LTFTs are so high and my advance seems high too at times..
...

thanks man i did that...a few things jump out at me... Ill have to look it up again with my vin but i think my gearing is 3.73 . In my tune he has the gearing at 3.42 can I just change that field...

ok so i checked and it was originally a 2001 tune...

ok I have a 98 tahoe. I swapped in a 5.3LS engine from a 2002 silverado. ECU is from a 2001. the shop i bought it from put the base tune in it. i couldnt get it running right with little diagnostic...

New here from Birmingham AL. I have a 98 2 door tahoe I just swapped a 5.3 LS with Longtubes, exhaust, and an intake. long story short I got it running but Im having some issues with misfires etc......