I'm having some serious symptoms of an air leak at wot. Right when I got WOT the first frame or 2 reads an o2 reading of around .920mV then it just shoots down to .750mV or so.....thinking maybe my intake manifold gasket is leaking. It's got 150k on it, 9 years old and the manifold has been off and on 2 times. Thoughts?

 

I replaced mine at 20k after having tuning problems

 

at the moment I can't get more than 19 degrees of timing at wot with 6-7 degrees of KR with 93 octane

 

What changes have you made in your tune? VE, MAF, spark, etc.????

 

best way to eliminate them as a problem is to just replace them, i mean yea its money but i think its worth it. the old ones are prob worn

 

nothing. It's basically just a bone stock gm tune

 

IMO your tune is really lean, that is why you are getting KR @ WOT.... The spike you see when you first hit the gas is "Lean-throttle-tip-in" fairly common.... You should start by tuning your VE table (preferably with a wideband) then tune your MAF (preferably with a wideband)....

 

It's a "stock" tune Wheatley sent me

Maybe I should load up a stock silverado SS tune and do that?

Problem is none of them had cable TBs

Could you modify the tune for me to make the necessary changes using stock parameters from an SS?

I attached a stock SS tune

 

Are you running stock 6.0 injectors?

 

they are whatever was on the 4.8...24.7 im assuming