: 08 STS4 Performance Tuning

08-01-10, 12:15 PM
I just bought a 08 STS4 with the Northstar 4.6. I was wondering if there is any tuning software for this car. I have tuned My other cars but have not found anything about this car. On other cars I have tuned, I have been able to tweak a bit better MPG and a few more ponies. I have only used Diablo software but they only show software upgrades for the Escalade.

Is there any help out there for me

08-01-10, 02:43 PM

only places which can tune the LATE 06-current N* pcm.