Jim, the next step that works well with the IA stage II is the schrick 272 cam and a K&N filter. You may want to question Ned on the adjustable wastegate spring perch... Suggest trying the 1 cam tooth advance to bring the boost down to the 3k range... The next step is the beasty RS2 turbo. Scott PDQSHIP@AOL.COM 87 5ktqRS2