After driving with just the exhaust and intake done, overboost was a problem and we decided a computer mod was needed but with all things it didnt stop there!!! Vlave springs rods and fuel pump were added to the list. But there was something not right with a friends engine, who had simialr mods- he put a rod through his block which prompted a compression test on our engine. Look what we found.......All this from only have a 2nd CAI and exhaust system.