I dont have a lot of experience with crazy larry, but does it ramp rail psi up pretty quickly? It doesnt increase peak pressure, but just ramps it up much faster if I remember right, I may be wrong. If that is the case, 1/3 to 1/2 half throttle may give you the pop if the rail psi is trying to ramp up fast, but with the 120's the CP3 is surely struggling even with 30psi of supply pressure. There is still the possibility of timing pop. How much advance does the CL timing have?