Jeff you've got to do some sort of trial to determine what the issue truly is.

O2 sensors are cheap $25... Anyways the O2 sensor does nothing @ WOT.. the fuel maps and timing is preset for WOT.

I assume you said that because the race gas eats up O2 sensors?


So what happens when you turn the boost up, does it still act the same.

I am starting to think you have a horrible connection some where and it is causing turbulence, the faster you go and the more load you put on it. Thus making the pressurized air to start stacking in the intake..

Are you running stock intake manifold?