I have recently did a compression test on my motor ( Okay numbers 150-160 through all cylinders.) before compression test running 18 psi on engine no problem. after compression test I plug everything back in. while driving at higher boost it misfires and pops really bad. not like a fuel cutt but just misfires. prior to compression test and problem have replaced spark plugs and spark plug wires. i have double and tripple checked everything spark plugs are gapped at .032 and have been gapped at that while running 18 psi with no problem. when i turn down the boost to 12psi and have minimal to no problem i have still experianced it at lower booost. I have tried adjusting it up every psi and seems to start at 15psi. I have read to reduce spark plug gap to maybe help at higher psi, but i have not tried that yet. im jsut confused on why it would all of the sudden having a probelm at higher psi. I have not checked for a boost leak. or at least havent done a boost leak test. recently have replaced injectors as well. I am Going crazy I have been searching for information on this topic but have had no luck with what would cause this. and it was absolutely perfect before compression test. boost fine on 18 psi. also for some reason my wideband o2 sensor went bad right after this had happened not saying anyting related but strange. any advice or info on the subject would be much aprreciated. ( I am running a evo 16g turbo, walbro 190 fuel pump.)