I put 200+ miles on the setup today with no major problems or failures. Today was 93 degrees so it was hot for this area. I am running a draw through MAF setup. I can keep it from dying just the way seawulf described. On the otherhand I had a vacuum hose pop off and although the boost wasn't as high when that happened it didn't die nearly as often so I think the cure might be to slightly raise the idle because if I give it just a hint of gas it doesn't die. I am only running 4psi right now because I don't have a boost controller, but I will probably make a ball and spring one out of stuff from a hardware store shortly. I have wired my two radiator fans to be on whenever the engine is on that way the temp gauge never goes past the R of normal. I had to zip tie several coils of the spring for the blow-off valve so that I wouldn't get compressor surge. I had to set the DEC-CEL function on the SAFC to 20% so that it didn't go rich when the blow off valve went off. Anyway it is LOTS of fun to drive and pulls REALLY HARD.

ATX MTX swap, rear drum disc swap, drilled rotors, ported intake, optim throttle body, CAI, 7.5L MAF, adj. fuel regulator, longtube headers, underdrive pulley, no EGR, low inpedence bigger injectors, 2002 Focus Swap