the rule of thumb with EGTs pre-turbo (in exhaust manifold) is to not hold 1350 for a long time. I have seen EGTs above that, but it was just a short burst...like 10 seconds. If the temps stay too high for too long, you could melt your heads (they're aluminum). I have read on other forums that some guys peg a 2000 degree pyro in the 1/4 mile. If you see temps at or above 1350, you can either 1 back off, 2 push it harder so the turbo builds more boost, or 3 lock out overdrive and not lug the engine, which kinda has the same effect as #2 since it will bring up the RPMs. 3 would be best if you were pulling a long hill.
