Rich Misfire on E85/high boost?

[storm]

So I think I am on to something with my shutter/miss issue at higher boost. This is a turbo 6.1 on E85. I have a full fore fuel system with solid fuel pressure. I have reviewed countless logs and the only thing that stands out is that when I get up past about 11psi my AFR's drop down to 0.68. When I am around 5-10psi they are typically around 0.75 on the lambda scale. Also, NGK 6510 plugs are gapped @0.024.

The car runs absolutely fantastic up to 10 psi, but then will pretty consistently miss above that and that is where my AFR's seem really rich @ 0.68.

3 logs are attached showing the boost/AFR scenarios. Open to any suggestions to lean this thing out a little at higher boost!

tune.hpt <<<Tune File
lowboost.hpl <<< 9psi boost log=0.75 lambda (no miss!)
Highboostmiss.hpl <<< 13psi boost log=0.68 lambda (miss/sputter)
Highboostmiss2.hpl <<< 13psi boost log=0.68 lambda (miss/sputter)

[luciddeath]

Ill be home in 15 mins lol. I wanna help

[rays04gtx]

I still think it's a hardware issue, but looking at your tune, I noticed that
(1) your Dynamic airflow is still stock. Engine>Speed density>Dynamic Airflow. Might want to up it to 13.00, see if it gets better, if not go back to stock.
(2) your Injector duty is up in the 90s when it starts to sputter and miss, My opinion is something is going on there, 85-87% is where it should be anything over that your lossing control of the injector.
(3) Looking at table 35035 , ETC Airflow , Under 1.02 V yours is slightly above stock, but above 1.02 yours is stock, for Me I've found that reduecing those #s above 2v 85% helps with smooting out acceleration.