i am having problems with the truck my 07 i took the 6.0 out and put a 6.2 in the only difference is i shaved the heads 20ths still has the headers and cold air that is it.
i am looking for a tune to compare with mine to see what the hell is going wrong.

it is missing and poping when u stab the throttle then it clears up and is fine it gets about 2* knock and it is reading 1.36 on the grams per second when i read the log on the timing table. i have look for a vacuum leak found none.i am

 

Well, 1.36g/cyl is far far more air than any 6.2L will see without 10-12psi of boost, so there may be some issue with that. What is your ignition timing (not KR) doing at that point?

 

it is -5

 

mine did that.....it drove awsome until id stab it...it was a burnt spark plug wire that had cracked and i didnt know it. i cant help you much more than that

 

put the stock air intake back on. something is wrong with the incoming air calculations. its giving fuel and timing for an airflow that isnt happening. how does the mass air mount in the intake?

 

maf scaling is off. the g/cyl is a direct result of this. this is how you're pulling 1.36 without forced induction.

either the afr is way too rich, or way too lean on the stab. without a log, kinda hard to guess right, or even close.

 

the mass air mounts like stock right by the air box

well kindof both when i stab it,it goes lean for a split sec. then just keeps getting richer up to 10.0 arf

 

slow down the enrichment rate