Quote:
Originally Posted by ztan
Not sure why you'd be considering the most painfully obvious example of shifting 2nd-3rd WOT mid corner unless you wanted to destabilize the car regardless of induction type. I find the throttle response above 3000rpm quite predictable and controllable with my Greddy T518Z kit and accurate throttle control.
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[ame="https://www.youtube.com/watch?v=XU4Sa3RCCV4"]Willow Springs International Raceway BRZ/FRS/GT86 lap record 1:30.778 - YouTube[/ame]
Skip ahead to 1:06. Let me explain what exactly happened there.
Downshift to third. Turn in. On-throttle. Unexpected understeer, so a quick lift to destabilize and rotate rear. Immediately back on-throttle. Expected power is not there, and expected rotation does not continue due to lack of thrust in the rear. Add front steering input. Turbo spools as steering input is made, and breaks rear loose. Countersteer to correct unwanted rotation.
And, some lap times to validate the lap in the video, from fastestlaps.com
Pos Make / Model Time Year Power (hp) / Weight (kg) Driven by
1. Porsche 918 Spyder 1:23.54 '13 887 / 1640 Randy Pobst
2. Chevrolet Corvette Stingray Z06 1:25.00 '15 659 / 1598 Randy Pobst
3. Lamborghini Huracan LP 610-4 1:25.17 '14 610 / 1422 Randy Pobst
4. Nissan GT-R Nismo 1:25.70 '15 599 / 1720 Randy Pobst
5. Chevrolet Corvette Stingray Z06 1:25.76 '15 659 / 1598 Randy Pobst
6. McLaren 650S Spider 1:25.88 '14 650 / 1468 Randy Pobst
7. Dodge Viper SRT-10 ACR 1:26.00 '08 608 / 1536 Dominik Farnbacher
8. Chevrolet Corvette Stingray Z06 1:27.10 '15 659 / 1598 Randy Pobst
9. Porsche 911 Turbo S 1:27.17 '13 560 / 1605 Randy Pobst
10. Porsche 911 GT3 1:27.22 '13 476 / 1425 Randy Pobst
11. Chevrolet Camaro Z/28 1:28.40 '13 507 / 1702 Randy Pobst
12. Callaway Corvette SC627 1:28.61 '15 636 / 1605 Randy Pobst
13. Porsche 911 50 Years Edition 1:28.93 '13 400 / 1410 Randy Pobst
14. Chevrolet Corvette ZR1 1:29.69 '08 647 / 1530
15. Chevrolet Camaro Z/28 1:29.72 '13 507 / 1702 Randy Pobst
16. Nissan GT-R 1:31.23 '08 480 / 1740 Steve Millen
17. Dodge Viper SRT-10 1:31.28 '08 612 / 1567
18. Lamborghini Gallardo LP560-4 1:31.32 '08 560 / 1530 Steve Millen
19. Chevrolet Corvette Z06 1:32.06 '05 513 / 1437
20. Lamborghini Gallardo Superleggera 1:32.47 '07 530 / 1520 Steve Millen
21. Dodge Viper GTS 1:32.81 '97 457 / 1580
22. Dodge Viper SRT-10 1:33.10 '05 506 / 1600
23. Porsche 911 GT3 RS 1:33.14 '06 415 / 1375 Steve Millen
24. Audi R8 4.2 FSI Quattro 1:33.20 '06 420 / 1560 Steve Millen
25. Porsche 911 Turbo 1:33.31 '09 500 / 1570
26. Porsche 911 GT2 1:33.57 '07 530 / 1440 Steve Millen
27. Ariel Atom 3 1:34.00 '08 300 / 456 The Stig
28. Lamborghini Gallardo Spyder 1:34.32 '06 520 / 1748 Steve Millen
29. Dodge Viper ACR 1:34.90 '99 466 / 1525