Quote:
Originally Posted by glamcem
little update about my custom brake cooling duct;
this past weekend I had a chance to test my custom brake ducting (updated routing) and even I ran out of the track couple times and it still held up just fine
 as well as my new FT86 front splitter..so for those who are not sure about the sturdiness of the ducting and the splitter, this might be a good news  @ Model Citizen @ ATL BRZ @ CSG Mike @ rice_classic
I have to mention that I added metal zip ties and intentionally left the plastic ones to see if they melt after some hard track use and they both held up just fine,YMMV
with that said I still had some fading especially when coming close to the T3 but soon after that brakes recover I think it's due to brake cooling, I will also need to address the rubbing issues I will most likely raise the car a little bit..
here is some footage from the last event
some track footage with the splitter and brake ducting 
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What kind of pads are you on? Sounds like it's time to get some better pads; you're just barely hitting the limits of your pads, and it'll get worse as you get faster.