I think the point with hear soak is not down to how much heat the cooler attracts but how quickly it cools back down. When the car is stationary all coolers will heat up based on where temp in the engine bay. It's how quickly that temperature drops when you start moving and how efficiently it disapeats that heat. They all get hot then cool down when moving, but the less efficient ones hold that heat. So as soon as you stop or slow down temps go back up
I had a stage 1 airtech, worked well, got hot when stationary and cooled fairly quickly when moving. I switched to a peron, noticed a big difference in this recovery of soaked in heat. It runs cooler anyway during general driving, but the way it gets rid of the hear after a good soaking is most impressive. It felt like the airtech and def the oem were fighting the soaked in heat and once soaked would be a struggle to consistently keep the temps down.
Also the ecu will pull timing way before 50deg, as soon as it senses knock it will pull, an important factor to prevent knock (as well as octane) is temp. So the colder you can keep things the more timing you can run. Hence you can run water meth kits with mainly water to just lower charge temps and wind your timing up. Obviously adding meth increases octane with is another boost to running more timing. But colder is definitely better
