sorry guys..failed to mention i do have a 4" downpipe with 5" exhaust ..the intake i made myself..basically i disassembled the stock box area and opened the entire area around the battery on both sides..sealed off engine heat from intake and i used 4" pvc with a cone filter..80 hp setting hits 28 psi boost..100 hp..will hit 32 psi.if i mat it for more than 2 or 3 seconds..