nbsu

  1. Starfire47

    Limp Mode P0700 P0776

    Looking for input with an issue I have been chasing my tail on. Have a 2003 Chevy Lb7, has a generic canned tune (bully dog?) from the previous owner. 4" Exhaust, New injectors, K&N Intake, 35" tires, 230,000 miles Never had any issues with the truck, have put 70,000 miles on it since I've...