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IAT- How Hot will you go?

General Tuning Discussion

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Post Turbo @ the intake port, 60C - 140F or maybe 100C 212F ?

A lot of stuff with stock mount intercoolers and more than factory boost go towards 100C.

With the factory intercooler i regularly saw 90C in warm weather in my rx7, bit lower with a twin pass cooler and sealed ducting now. It still ran fine, just a bit less punch. PFC base maps progressively pull timing with high intake and coolant temps, I think if you tracked one on a hot day between IAT and coolant trim it could be 6 degrees retard on the base maps.

It is probably engine dependant how much of a problem it presents to mapping.

I start pulling timing and getting richer around 55 of 60C measured in the intake manifold.

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