I installed a 2.7in pulley on my car, and my iat2 was highway driving 80-85F and idle was 110-115F now this is with a 2.8. Now that I put in the 2.7 it reads 85-90F and idle is now 115-120F.... it was around 60F outside today when I installed the pulley and went for a test drive. I'm using this UltraGauge Automotive Information Center and OBDII Scan Tool to read IAT2 and other things. I wish it would've read KR but it doesn't..... oh well it works for now

 

bump

 

I have a 2.8 and usually read about 25* above air temp with opt b and cobra front mount.

 

Soundsright to me...

I'm running 2.85"
Normally at cruise IAT2 will be arround 20 - 30 degrees hotter then outside tempature.
You said its 60 outside, so IAT of 80 - 90 would be okay...
Your IAT2 Will go up at idle, because there is no air moving across the radiators in the front.
Once you start moving, it should start dropping.

 

thanks guys

 

how are you reading ia2's, rewired the map using the maf's ia1's?

 

yup, I'm using the LSJ tmap, and wired it up.

 

how go you like it? help tuning wise?

 

20-25degrees difference for me with ait1 ait2

 

I see 15-20 degrees over IAT1 on average.

OTTP Gen 4 Dual Pass HE
GMR Option B
80/20 Coolant Mix

 

in 30 degree weather outside at 150mph, mine reads -8

 

We don't care about your fancy turbo setup's IAT2's

 

Sounds about right. I'm normally at 30-40 above ambient while driving pretty hard on the highway with out a dual pass and with only the svt lightning h/e.

 

for me last night as i got my tune my iat1 was about 35 and iat2's were about 65-80....dual pass, opt b, and griffin

 

its not air across the radiator that causes iat2 to go up its lack of air across the laminovas

 

Ill have to check once I get my IC Pump replaced then.....
Ill moniter IAT2 and MAF.... And see if there is a corrlation