I am feeling for all the heated areas...one of the cooler summers in the Pacfic NW...we have just made 75 the last week...and only hit 90 a couple of times this year...

 

Good question...
I'd like to know too - Hypertech Power Stat 160deg
Reische Performance 170deg
Stant Thermostat 180deg

And what is the optimal temp to set via a tuner?

And i'm going with 2 bottles of amsoil coolant booster & tap water. I'm split between N. TX (aka Africa) and NW FL (aka Lower Alabama). I'm not too worried about single digits anymore either.

 

I can't speak to the Amsoil coolant boost with straight water....but I can tell you to not bother with putting it in with a 50/50 mix of antifreeze. I did it this week and gained a whopping 2 degrees in my intake air temps and engine temps. It may work alot better with straight water. Anyone with actual data to share before I start draining antifreeze?

 

I am running the Hypertech 160 in my 06GT...I set my low fan speed to 170 and high at 180...

 

loving my intercooler and methanol ! it was 97 here yesterday with an heat index of 110 ran an Gto 45-110 killed him twice , first time i jumped out first , next time I let him go first not even close a.i.ts were a cool 107 !

 

If you think it is Hot, then come to Texas! Bigdin can vouch for what I am going to say, Texas only has two seasons: Hot and Hotter.
In Texas there is saying: if you don't like the weather, wait thirty minutes, it will get hotter!

 

Just do it, you will have less temperature separation between your thermostat and cylinder head temperatures. I refuse to run anti-freeze in my GT500 until the ambient temperatures highs are below ~50*F

 

Today it was 104 out and I was running my normal IAT of 116-125 depending on speed with the supershaker ram air and engine temps of 198-200. What would I see if I went straight water and the Amsoil booster?
Thanks,
Jim

 

With coolant booster, and stock T stat. Your temps should remain close to the same at the Tstat. The stat regulates your temps, but you WILL gain cooler temps in the heads. The separation will be less from the thermostat sensor to the cylinder head coolant sensor.

Are you talking about IAT1 (at the air filter), or IAT2 (after the supercharger)?

After convincing another GT500 owner to use straight water and coolant booster in his intercooler system, he gained a good bit lower IAT2s, but he also had a twin fan unit.

 

I'm not sure if it is IAT1 or IAT2, I am picking it up off the OBD connection with a scan-gauge II. The temps start going up under boost.