For those who have followed on my previous thread about the PCCB having soft pedals after hard use, I am now facing another interesting issue regarding the PCCB.

Based on the previous comments on how my OEM brake fluid got boiled, I went out and flushed my brake fluid with ATE Super Blue Racing. Last weekend, I took my car out to the usual back mountain roads and did another drive. The back roads consists of a combination of high speed 3rd gear corner and 2nd gear hairpins. For the first twenty minutes, my car was performing great. The acceleration and the braking power from the PCCB was just awesome. However, as I was driving, I came across some slower traffic and consequently, I was stuck behind traffic for about 5 minutes (@40-50km/h vs my normal 80-120km/h speed).

After I passed them and regain my usual pace, I noticed that my brake pedal were a little bit softer than before. After a few minutes on the clear roads (and still driving fast), my brake pedal pressure was back 100%.

Now, this has got me thinking, how well does the PCCB dissipate heat at low speed? Because it seems like my brake disc got hotter while following the slow traffic due to less air flow to cool them off. Once I got back up to speed and with fresh cooler air, they were back on form again.

Any suggestions on how I can improve this problem? Or is this something that I have to live with?