I just noticed that I cant go over 85. I think I am hitting fuel or speed cut at 85 mph. The engine just shut down once the spedo hits 85. I am running about 17 psi and have a greddy BCC set to 4.29v. The engine will boost fine until I get to 85. Any sugestions?

that is not normal at all and i have no idea what would cause that. maybe you should have it looked at by a dealer.

That sounds really weird. I have never heard of this.Like SOU said, have someone check it out. I dont see how you could have this at 85 mph, thats way off of the speed limiter and if you have a BCC then it shouldnt be feul cut. Are you sure that it only happens at 85mph or is it boost related?

I just turned down the boost to 12 psi and it went away. I can go full throt over 110 with no problem. The only thing that I can think of is the BCC may not be set right. Also when accelerating in 4th gear you stay at the high boost levels for a longer period maybe that has something to do wtih it. So my conclusion is that, one, I have the BCC set wrong or,two, I have a bad BCC since this goes away when I lower the boost.

what do you think?

This message has been edited. Last edited by: Dr. Rodgers,

ok... I found the problem. The BCC was wired wrong , I mistakenly wired it to the throttle position sensor (TPS) instead of the turbo pressure sensor( TPS) . Everthing works great now, full boost now up to 120 mph. I am just glad I did not fry my ECU. Live and learn!!!!