your mph is low. I was running a mph of 104 with only an exhaust and intake. If you have the stock cams in there, right around 6500rmp is where the power band is going to start dropping off.(unless more boost is compensating for the loss of power at higer rpm's) So that may have been a good shift point for you.
btw, how much boost are you running?
I also have the fuzions in 275/40 and they are one of the best tires i have used. and I'm also using the 6097's at .028
btw, how much boost are you running?
I also have the fuzions in 275/40 and they are one of the best tires i have used. and I'm also using the 6097's at .028