On an E85 tune, there's zero reason to pull timing back on a 140-160° IAT. Octane is plenty sufficient. Did your tuner forget to relax the IAT/Spark advance limits on your E85 tune?
I think it’s all precautionary
Then it is not just for cooling at that point and the nozzle location and size will need to change. You may want to have a second nozzle hooked up and ready for those times and just have it turned off
Two smaller nozzles that add up to one bigger nozzle. the two smaller nozzles are always better
No worries mate, without actually testing specific atomization at different flow rates it's an educated guess. I can also guess that there is far more heat in a PD blower as well vs a Centri with a stock manifold.
I am happy with the trunk setup, originally I was going to bolt it all down to the trunk. This was a little more work but in some ways easier. I only had to drill two holes through the trunk to mount the lexan and all the components mounted on top. Cutting and sanding the lexan took a bit of trial an error. Luckily, I had just cut and sanded some for some airplane windows a few months back so I have a bit of experience with it. I really like that I can take it out as a unit when not needed, that was the biggest advantage for me. I suspect from about October to March it won't be needed at the track. And on the streets of Mexico I'll never need it (as I've done a few runs from about 30 to as fast as I am comfortable and even in the hottest of days it never is an issue), so I could remove it and just install it when I go to the track. And yes the centri likely makes much less heat. And also agree that it is all an educated guess with me, I can do some analysis but don't really have the proper equipment to measure/record/etc. I just looked for what was working with most people, and made some SWAGs.
After the TB is not good for cooling on a centrifugal or turbo setup. It doesn’t give the water/meth time to work