Just wanted to start a little thread lately denoting some of our intercooler / radiator setups and temps you are seeing. I've done a few searches and haven't found anything that compiles some of the data we see with our setups. I think it is important to compare the intercooler setup along with what radiator you are running. If you have the 93 or 99 front bumper. Any ducting additional to the setup. If you have a vented hood. The ambient temperatures you are seeing during the recording. And if the car was cruising, in stop and go traffic, boosting, or on a race track for repetitive abuse.

Thought should go something like this:

Intercooler: Pettit one-off Coolcharge II/III SMIC (mostly like an M2 medium) with ducting
Radiator: Koyo N-Flo
Bumper: 99 Spec with full panels and ducts
Hood: Factory
Coolant: 50/50
Waterpump: Factory
Thermostat: 180F / 82C

Panama City Beach, Florida July 25, 2021
Ambient Temp: 95F / 35C
Road Temp: 110F / 43C

Cruising Air Temp: 122F / 50C
Cruising Water Temp: 183F / 84C

Boosting Air Temp: 136F / 58C
Boosting Water Temp: 183F / 84C

Stop & Go Air Temp: 140F / 60C
Stop & Go Water Temp: 194F / 90C

Mind you these were my averages when I'd look at the PowerFC. Measured Road Temp with IR Gun.

 

I have an N-Flo with large Pettit. 93 front. I am pretty much the same setup. Running dual mishimimoto oil coolers. My temps with the oem thermostat are about 2°c on avg higher than yours from what I remember. I am running water now so intake temps drop rapidly on boost. The 2° could be the difference in front end as my oil coolers ducts are narrow as is the radiator intake. The oil temps probably will have an affect on the water temps.
If I put the 76° thermostat in I will run cooler.... I know some people say it does not matter once warmed,, but in my situation it does. In the "cokler" months of South Florida I have a hard time getting it up to 80 and keeping it there..

 

S6 front, Fluidyne radiator, PFS IC, FC fan switch, about 60/40 water to coolant, stock R1 oil coolers.
Fast IAT relocated post IC. Boost activated WI with nozzle post IC and IAT.

Last Sunday ~ 94-96 F. ambient. No idea on road temperature.
My best recollection off PFC Commander:
Highway cruising; coolant: 82-84 C. IAT 33-35 C.
Stop and go; coolant: 95-98 C. IAT: 44-48 C.

 

@Sgtblue your intake air temps are pretty nice!

Forgot to add I have the RZ, so dual factory oil coolers as well.

 

I’m satisfied with them given my mods. That said, when it’s that hot, and in stop n go I’m usually get alittle conservative with boost…even with WI.

 

I have the Greddy full kit, but I cannot run my car right now. South Louisiana in July / August, with no A/C, is simply not an option. During the summer (track off season), I will be chopping up my hood for a louver from racelouvers. I also run water+water wetter for coolant, water+methanol injection on my intake elbow, and a Mishsimoto thermostat. Part of the summer planning is to run a silicone hose from the rear iron nipple to the water pump housing, and switch to an OE thermostat. The water / methanol drastically lowers IATs (I also have a fast-acting IA sensor), but I have to keep on top of making sure the tank stays full. Not much of an issue since mine is primarily a track car.