undertray mod solution for overheating problems

[88turboii]

anybody who has owned an FC know they overheat very easily.. I had upgraded to koyo radiator, and i still had overheating problems when I pushed it hard when in the mountains or on track days.. it would always get hot after about 10 mins of WOT driving on a track, even in cool weather.

the solution is all in the ducting.. I looked at the factory undertray, a lot of air is lost to under the radiator and through that space between the top of the radiator and the radiator support. I used aluminum tape to seal off the upper gap and it helped a great deal. The next thing I did was modify the undertray by cutting off the back half, right where it meets the bottom of the radiator. I zip-tied the tray to the bottom of the radiator, and then used aluminum tape to seal it off. This forces all air through the radiator

before the mods, the temps would get up to about 1/4th of the gauge at interstate speeds with a/c on, and I had to up my e-fan setting to 205F to prevent it from constantly running. after the ducting mods, the temps never get above 1/8th of the gauge when at speed. I recently took it to the mountains and ran around several hours with a/c full blast in 90+ degree weather and it stayed at 1/8th of the gauge.