Not to thread jack, but do you guys think the crappy Koyo rad cap could be my issue? https://www.s2ki.com/forums/index.ph...&f=22&t=737279

Would I need a new fan switch and thermostat other than OEM too?

And to the op, yes, the ARC cap Type B will fit.

 

^it could be the radiator cap, but if its filled to the top and the cap is bad, you would most likely get coolant coming off the top. If you open the cap when its hot, and coolant bubbles (be careful...) out, then the cap is most likely not the problem

 

Mishimoto has great radiators for the price. It also comes with a pretty solid warranty. We have these instock, PM us for pricing.

We do recommend to replace the radiator cap though as they have been known to be defective from time to time.

 

I did have an issue with the cap and Mishimoto sent me a replacement cap right away and I haven't had any issues with it. They did just come out with a temp gauge cap ...seems pretty gangsta! http://www.mishimoto.com/mishimoto-tempera...-cap-small.html

 

I'm going to get one of these for tracking during the summer - I feel like the extra coolant and surface area would be more efficient under extreme heat situations (like on track). Seems like a great cooling mod for the price.

I also understand they make a proper AP2 model[?]