So out of curiosity I bought a Prosport intercooler air temp gauge. It comes with two temp sensors. You install one before the intercooler and one after to measure temp difference across the core.
I recorded a couple pulls today showing the temp difference.
On the gauge display the "In" is the air going into the intercooler. This bung is located about a foot from the compressor outlet.
The "Out" is the air coming out of the intercooler. Here I have two bungs installed. One upstream and one downstream of the meth nozzle.
Here's a pic to show what I'm talking about
I did two pulls. The first pull I had the sensor installed in the "Out" side before the meth nozzle. I wanted to see what intake temps were just from the intercooler cooling the intake charge.
The second pull I installed the "Out" sensor after the meth nozzle to see how much the meth/water injection cools the intake charge.
A little info:
Both pulls were 1-4 gear. I stopped at 6500 RPMs in 4th.
Ambient air temp was 60 degrees.
Intake temp was 74 degrees at the start of both pulls.
The first pull was done after a cold start as soon as coolant and oil temps were up.
The second pull was done about 20 minutes after the first. I pulled into the shop, changed the sensor location, let the car cool for a bit, and brought it back out to run it. Thus the higher temps at the beginning of that pull.
Kinugawa STS TD06H-20g @ 25psi
Snow Performance meth injection. 50/50 water/meth, 375mL nozzle
Kamak ELH and UP (same as Tomei, GTSpec, etc.)
Invidia catless downpipe with electric cutout installed
COBB SF intake attached to a custom pipe to make it a true CAI
1st pull. Before meth nozzle temps.
Second pull. After meth nozzle temps.
Not sure how useful this is, but I found it interesting.