Discussion Starter · #1 ·
I finally got the light-at 30 lbs. of boost. I have a SCMT 1705 on an 03 7.3 auto. I put my 4 inch exhaust on and it and thats what did it. It will only hit 30 under full throttle in OD with the TC locked up. The light comes on and the boost drops. I thought it would come on at 24lbs? I just installed a MAC cold air kit and it really helped boost response. Normal max boost through the gears is 25.