Only things I have are boost related items refrenced off intake. No I have not checked fuel pressure. My friend is gonna swap mafs with me to rule that out.

 

Bringing this back as I am still chasing the problem. I have swapped the mafs with a buddy reset ltrims and they climb right back up to +25. Today we put the smoker on the truck and found one small leak on the manifold took care of that and still no change. Any other ideas, o2s seem to be working properly switching back and fourth.

 

Crapped out spark plugs? A minor misfire will make the O2s read lean.

 

Did you reset the trims after fixing the leak? If not, it will take time to relearn.

 

Check your fuel pressure. Also as Erik mentioned you have to reset your fuel trims, or it will take a couple hundred miles for them to completely re learn.

 

I havent reset the fuel trims after finding the leak, and will check fuel pressure today.

 

I chased this around untill I went 2 bar SD, my setup had a tight bend infront of the MAF. I think that was causing it to mis read the air it was too turbulent maybe. I could not get it to work but once I "failed" the MAF all seemed right. I am working on the SD tune now but all is better in my world on that end anyway.
Dave

 

Ok update. Fuel pressure is good, reset fuel trims climbed right back to 25. Something I notice though is when you tap the gas the ltrims will drop drastically. Then when you let off right back up.

 

You most likely have a large vacuum leak(unmetered air entering the engine), or a bad MAF.

 

Already tried both of these.. mentioned a few post above.