having problems with my boost box

amy

i just installed the box and tuned it using the high boost method because i want to run a 26-27psi spike in 4th and 5th gear, 1st-15psi 2nd-17psi 3rd-22psi , it seems to be fine but a few time while i was doing a 3rd to 4th gear pull it would drop all the boost and only let me get 15psi in 4th, im almost 100% i didnt hit the overboost which is set at 29psi. sometimes after the shift into 4th it will go to 15psi sometimes 21psi , and when its working right 25-26psi. i have the gain and spring pressure set to 0 , i have no idea whats goin on but its annoying

Check the wiring, go through the troubleshooting steps. Perhaps something went bad in your installation.
Also, if you hit that 29 psi overboost, it will back off the spring pressure.