PC-5 rev limiter?

I have a turboed 900XP with a PC-5. When I’m pinned at 11 lbs of boost I hit the rev limiter. This is supposed to be a 13lb turbo kit. I went into PC 5 and found the Rev Xtend parameter and it says 9000 and the "key" box beside it not light up so i can’t change it. The problem is, it’s on the limiter at 8450 by the gauge in the dash. Anyone know what’s going on? Thanks, Dan

PC-5 rev limiter?

I have a turboed 900XP with a PC-5. When I’m pinned at 11 lbs of boost I hit the rev limiter. This is supposed to be a 13lb turbo kit. I went into PC 5 and found the Rev Xtend parameter and it says 9000 and the "key" box beside it not light up so i can’t change it. The problem is, it’s on the limiter at 8450 by the gauge in the dash. Anyone know what’s going on? Thanks, Dan