2008 LS3 Corvette nitrous problem.

[mustangjonGT]

My friends 08 A6 Z51 Corvette is having some trouble with his car when using nitrous. 1st and 2nd shift fine, but he said that 3rd gear hangs a little. He said that the rpms would go up then down and up again then shift into fourth.
He is shooting a 150shot and his best time in the 1/4mile is 11.03@130mph with a 1.88 60ft hitting the nitrous at 3000rpms.

His mods:
Kooks long tube headers and xpipe
Vararam CAI
160stat
Zex Nitrous kit.

Here is his log. Im having trouble uploading the tune file, but I'll post it up soon.

[n77nxc]

Try bringing the WOT Shift RPM down 500 rpms. I was having a similar problem on mine and that fixed the problem.

I spray on my 07.

[firefly9r68]

yea you could just lower the rpms down a little and maybe drop the MPH down about 3-4 mph and it should catch

[n77nxc]

Tell him to put a 2800 stall in that car and watch it fly. I cut 1.59 60's on mine.