i have a 99 LD9 with the GM S/C, ive been getting really hot ITA's. i've got a meth kit being put in when i have time. i want to know if there is any way to drop the temps. ive heard of changing the thermostat, any other ideas?


14.728 @ 92.14 (65 shot)

What are really hot IAT's? And how are you measuring it?





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im using HPT. im getting around 110 -150f in normal driving, and 200f ish at the track


14.728 @ 92.14 (65 shot)

Changing the thermostat won't reduce your intake temps. Meth is about the only way... the intake temps go up because you are compressing air, its physics.





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If you put the IAT after the supercharger that'd explain it.

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nathan121 wrote:im using HPT. im getting around 110 -150f in normal driving, and 200f ish at the track

That seems way high! What are your air/fuel readings? I just installed a GM charger on a 99 Z24 auto. Under wOT it gets around 150f.



FU Tuning

I honestly to this day don't understand why every1's iat temps would get so hot. In the dead of summer with my eco s/c Id only see intake temps of around 108-115 degrees on 8- 10 psi... with no heat exchanger and no injection set ups.

I thought I figured the ecos got hot because some people would have them up to around 12+ psi but an m45 running that hot?

the iat is at the bottom of the blower, but i have a 2.6" pully on there


14.728 @ 92.14 (65 shot)

Even with the stock 2.8" pulley on my M45 it would get up to180-200 under boost. Meth is about the only way (you can use straight water in a meth kit and it does work).