OILED vs DRY FILTERS w/ PLOT TWIST: IAT

[WildHorse]

It was interesting to read all the discussion about what a 4 degree IAT difference will do on near stock mustangs , but I think im good now.

I've come to the conclusion that unless your running stupid high IAT all the time, your GT. 10 degrees or 100 degrees don't matter. Just run good quality fuel. The guy you lines up with is facing the same temps haha. Just make your hail mary runs when its cool outside.

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[Red65]

I've come to the conclusion that unless your running stupid high IAT all the time, your GT. 10 degrees or 100 degrees don't matter. Just run good quality fuel. The guy you lines up with is facing the same temps haha. Just make your hail mary runs when its cool outside.

I remember back when PMAS released their open CAI for the S550, and both themselves and customers were doing tests on IAT's and how it affected MAF lbs/min. I think the ultimate conclusion is on tuned cars, more overall airflow from one aftermarket CAI to another makes WAY more difference than an IAT difference of even 50-100 F*. Most of the "high IAT's kill so much power" narrative comes from people using the No-Tune open CAI's with the factory tune pulling timing based on high IAT's since the car is supposed to be able to compensate for low-quality/lower octane fuel. Nevertheless, low IAT's is always good, but a 10-20 degree difference really won't be felt in the seat, or even a dyno for that matter, all other things kept the same.

 

[markmurfie]

Things you can do NA on hot summer days:
Water/meth injection.
Just enough for the endothermic evaporation cooling effect. Not too much to affect fueling excessivly. It's not legal but at the track only, don't just use a catch can, but disconnect the hot crank case vapors from the intake completely, plug the holes left in the intake track.

 

[markmurfie]

Did you know if you just go out to your car after it's been sitting for 12+hours and turn on the acc power, the IAT will increase? Probably cause the hot wire MAF is right next to the tempature sensor and the heat has no where else to go. Ford should probably redesign this. Or an intake manufacture could come up with some thing using a break out harness.

 

[StangTime]

Yes. I noticed the same thing. Car was sitting about 24hrs. Ambient temperature in the garage was 18 C all night. Pushed the start button and AIT is showing 31 C. When the car is moving it is between 2 and 4 deg C higher than ambient. I have the GT350 style open top airbox.

 

[WildHorse]

Did you know if you just go out to your car after it's been sitting for 12+hours and turn on the acc power, the IAT will increase?

Haven't ran it in 2 days cause of rain

Cylinder head temp 21c
Intake Air temp 21c
Ambient temp 17c

Left it on for 5 mins. Still 21c/21c

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