Relaxinrob Rob couple of things 1st fuel supply, you need a min of 1/2" fuel line to the motor. Fuel volume is needed more than pressure. A 50lb injector, at 44 psi flows 50, run 65psi and the injector goes to 68,if the injector is not designed for for high pressure it can leak down into the cylinder and wash it. It happens. 2 times in my brothers mustang. I have 2 255 walpo fuel pumps in my car with 2 fuel lines 1/2". I have had problem with the clog belt alignment and keeping it on. The 2nd pump comes on when the boost hits. 1 lbs. The regulator is set at 45 psi under vacuum and goes to 63 at 7 psi. The wastegate is set at 8 psi. I can go to 15 psi of boost but not with 50 lbs injectors. 72 lbs would be the next ones. MAF and Throttle body need to match. The programing in the ECU must also match to make the car run right. Rob Make sure that Kennybell knows everything done to the motor, what trans, and rear gears you have in the car. Wieght also. The fuel and timing under boost is very important. If you are looking for a dyno shop, Second Street in PA is very good. 215-257-3724. Had my car done there with the speed pro setup. Rob 1 thing I learned with the fuel system HIGH PRESSURE DOESN'T MEAN ALOT MORE VOLUME. When running the car the fuel gets hot also.
Go luck with the car. If you can find Greg Lapoint, he has been running Kennybell on his cobra for years and runs 10.20 with a small block, see if you can talk to him. Rick Lake