Quote:
Originally Posted by dre99gsx
Can you refresh me on your setup for this course? (brake setup, tires, sways, springs). You're my gauge on how well I am doing 
Also, what was your avg speed and max speed for thunderbolt?
I just wrapped up a 2-day PCA-DE session, had a blast with some great instructors
Very neutral, no over/understeer noted. My logs showed I spent a lot of time coasting and early braking, mainly because of the high speed between corners. Still not 100% confident...
NJMP Thunderbolt, dry, clockwise
Z43.0si Coupe, Motor (2JZ Swap, turbo 570whp)
Dunlop Direzza starspec2 245/275
Stoptech Sport pads all around, stock Z4M front rotor/330i alumn caliper/330i pads
BC BR coilovers, 9kfront/11krear, 23 stiffness setting
Best: 1.39:038 (Had lots of traffic each lap unfortunately)
Max speed: 148mph
Avg speed: 83mph
Highest G: 0.9 (never got above that, very odd seeing your comparison).
datalogger/acquisition files |
1:39 with street tires is respectable for DE especially considering traffic. I didn't crack 1:37 till I got bumped to advanced run group and from there I just experimented different lines and kept pushing the braking limits.
My goal is to crack 1:35 with my current setup:
Stock n52 + headers
TCK D/A's 450f and 550r
255/40-17 NT01 square
PFC 08's on stock brakes
Car weighs 3230 with driver
Regarding the g forces, as you get comfortable with more slip angle you'll see your times drop, and that'll come with seat time. I imagine you're still probably trying to remember each corner and what comes next so you're driving corner by corner instead of looking for that long arc that will take you through the next 2-3 corners.
Btw if you're hitting 148mph on the straights just means you're leaving way too much in the corners. My max speed on Thunder is maybe 125mph lol...
For everyone else I swear I'll get around to updating the front page times. Been getting crushed at work for last few weeks.