HPDE Track Prep -- What's needed?

wstar

I would just go after brake cooling/reliability and oil cooling for your first weekend with the Z, that will get you going. The stock sport suspension isn't horrible, so you might want to feel out what your next priorities are personally on-track. For me, I think a stiffer front swaybar (Hotchkis) was more critical than coilover upgrades, given the Sport suspension as a starting point.

On brakes: front ducting is really helpful on this car, and Stillen sells a kit with hub flanges and bumper intake flanges for our car. Also, staggering the pad bite (a slightly less-grabby pad in the rear than the front - most race pads have some options there...) helps avoid some ABS controller issues ("ice-mode") when track driving on the stock calipers.

Ice mode is basically that our rear Sport brakes are a little bit oversized on pressure / piston diameter from the factory, and if 1-2 rear wheels manage to lock up first in a braking zone while the fronts are still rolling (due to loss of weight over the rear - esp on bumpy tracks), the ABS controller thinks the car is on patchy ice or something and reduces your available pressure to all 4 wheels. The pedal feels hard, but the braking force just isn't there anymore. Can be corrected by partially lifting and re-applying the brake pedal as soon as you feel it happening.

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