I had considered brake ducts. Simpson asked if i was getting heat issues with the APs to which i said 'no' - they said 'don't bother then'... Most ducts i looked at would probably only fit to the rear of the OEM wheel hubs iirc, and may have needed some bastardisation for APs?
With regards to braking judder or noise, i used to get that if i trail braked a lot on track. Now i 'stomp' on the brakes more and am better able to modulate braking force with the APs - my brakes rarely complain now.
RTAB limiter kit was the one of the most effective and cheapest mods that i did to my car - really noticeable handling improvement on turn-in on track. Best thing about them is that you keep your OEM CSL bushes (which are improved over the earlier shite M3 items) and therefore retain some ride comfort. I personally wouldn't use urethane bushes and definitely not billet items as you will only speed up the rate at which chassis weakness/cracking will occur... We will all get it eventually of course! I might learn welding now so that i'm ready when the time comes!
I have found recently that my -2.5 degree camber is not enough for regular track work and have worn my front Cup tyres prematurely on the outer edges! I will try -3 degrees now.
Rob.
