a few suggestions. Run an ECU Diag, see if your in safety boost or other problems. Make sure your boost hoses dont have any leaks and the boost jets are in the correct hoses. Get a compression check or DIY. Get a boost gauge to see what boost your running. Do a dyno run to see where your RWHP compairs tp other stage III Z's(dyno charts on ttzd.com) Good luck, John