I do have heating issues, but only while pushing the car hard on track. After cutting the slit in my bumper and adding some ducting to the radiator it did seem to help quite a bit, but I know it can get better. I'm running a Mishimoto 3 row aluminum radiator, air diversion panel with custom ducting. However I am pulling it through a bar/plate intercooler and a/c condenser. Keep in mind that the ambient temps here are in the 90's with humidity about 60%. I do need to step up to some sort of aftermarket oil cooler in the future, but for now I'm trying to find a better looking way of getting clean air to my radiator.
Mishimoto dual electric fans with shroud. You can feel them pulling air through the inlets in the front bumper. I've decided to drop my bumper off to a body shop today to have them build a grill into it.
