1) Assuming you are not used to the drive by wire ECU controlled throttle.
Get on it. Needs to learn a more aggressive driving style.
2) im going to assume you have 3.21's also
The 3.8/3.6 like Rpms. Don't be afraid to get it up to 3000-4000 RPM's if it's a stick.
Or auto use that fancy shifter tap thingy to hold a lower gear