Anybody have a performance tune for this operating system. It's from a 2007 GMC new body Sierra. It is stone stock (K&N filter), but I'd like some extra HP/Torque?
Thanks,
Scott
Anybody have a performance tune for this operating system. It's from a 2007 GMC new body Sierra. It is stone stock (K&N filter), but I'd like some extra HP/Torque?
Thanks,
Scott