Experimenting with Intake Air Temp. Request for comments.

Sh0velMan

So in my experience (hundreds of hours of logging on the street, on the dyno, on the track, on the strip, autocrossing) the number 1 heat buildup causing factor is the radiator.

When the car is not in motion, the radiator heats the air behind the bumper cover up to 30-40 degrees over ambient.

With metal intakes, even if you have aggressive insulation (like me) it still ends up heating up the interior of the pipe, leading to eventual heat soak.

Plumbing the intake snorkels through the bumper to the outside air would be the only truly effective treatment for this phenomenon, by my reckoning.

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