+1.....good advice for OEM turbo & what fatflyguy recommended in bold is where I shift out at while on the track, because after that your just losing power.i actually asked about this from the few guys running mid 13's on the stock turbo. fatflyguy suggested to me to be shifting around 5800-6000 rpm's. surfmavrik suggested to go off a boost gauge and shift when your boost drops around 15-14 psi. considering these guys are running the best times on the 1/4 mile on the stock turbo i trust their advise to say the least
+1.....Get dynoed, look at your graph and when peak hp start to drop, shift 100-200rpms before that
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