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do88 seems to be the best. for manual transmission cars, the cooler doesn't seem to be an issue, but go ahead and remove the cooler blockoff plate. look in the duct and you'll see it.
i run trackspec hood vents and they help a lot. i realize that a lot of people aren't willing to cut holes in their hoods; either for fear of aesthetics or water. (regular rain doesn't hurt anything in the engine bay, by the way).
i have recently been focusing on proper ventilation and ducting. simply put, air needs to be forced where you want it to go. this is done with proper ducting, and creating a low pressure zone behind the cooler (this is where hood vents help).
our main heat exchanger is ducted pretty good, but once you remove the a/c condenser, you create large gaps that air flows around and isn't forced through the cooling fins. i plugged these fins with some high temperature adhesive-backed weatherstripping.
i am currently working on the ducting for my do88 dct cooler and oem oil cooler. the do88 cooler ducting isn't terrible, but it can be improved. the oem oil cooler ducting is terrible...
there isn't much you can do about the ps cooler, besides maybe upgrade it and put a sweat band over the reservior cap.
a commonly ignored piece of cooling is the front felt undertray. it is lightweight, seals up the front end nicely, and helps create a low pressure zone for the oil cooler exit. this is one area where aftermarket panels have not been an improvement. make sure your front felt is in good working condition.
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Instagram; @roastbeefmike
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