While the small changes helped, they weren't going to solve my issue completely. I still do not feel safe pushing the car hard for an entire 30min race. Next up was my plan to run larger brake ducting from the front bumper back to the caliper itself. I have been running a 2" ducting but the car simply needs more.
To the right are some pics of the openings in the OEM Evo IX bumper. The first pic is a 'faux' hole that most people route a cooling duct through. The only issue is if you upgrade your intercooler (like me) the larger piping further restricts the inlet - plus a near immediate 90-degree bend is needed to go under the blue radiator/frame support.
The 2nd pic is further to the left showing where a lot of production cars run their ducting from which is the corners of the bumper. Here you see the oil cooler sitting in the back; which itself needs as much air as it can get to keep the engine oil cool especially when you run consistently high rpms.
The patch job forward from the oil cooler is a previous attempt to route in a brake duct that proved to raise the engine oil temps by nearly 30 degrees.