Looking for help or understanding. I'm new to turbo. I had the controller set to ramp to 15psi, launched fine ran up to 13psi it shifted then dropped to 6 slowly after that. Ramp is set on time. Checked everywhere for leaks etc nothing. Made next pass ran perfect. Only difference between the 2 passes was the first pass the guy tried burning me down while on trans brake. Is there a timer I don't know about? Other ideas?