Running 7.20's you should be 6.80 on a 125hp shot. AND STAY AWAY FROM RUNNING FROM THAT SAFE RUNNING RICH CRAP! With all that extra fuel, you might as well spray a fire extinguisher in it with the nitrous because thats all its doing is keeping it from burning. If you haven't made it out of the 7's on spray with a 150 shot don't go any higher until you do. It should go an easy 6.80's with no tuning. HOw about this. If you want to be safe. YOu have the Big Sgot NOS kit RIght? If you do put the .091 jet on the nitrous side and the .093 on the fuel side and start at 6 psi on the fuel. That will be like a 240 HP shot and take out 8 degrees of timing. total timing with the nitrous should be about 28-26 degrees. Thats alot safer than trying a 400 hp shot. You said: "Well the nitrous fuel pressure is about 7 pounds with the fuel jet on the 400 horse pill instead of the 300 horse pill. i like a little more fuel." Did you mean just on the fuel side of the plate? What EXACTLY are you running for jets sizes in the nitrous plate? What are all the jet sizes you got with the kit?