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How much 1/4 mile improvement with drag radials?
I ran at PBIR 1/4 mile. I wanted to see what the car would do the way I drive it on the road. I did not use lunch control, held the brake and launched at about 1800 rpm. 60 ft was about 1.77, time was 10.45, trap 134.
Michelin PSS, rear 50, front 46. What could be achievable with drags and proper launch? |
Originally Posted by cfpchfc1
I ran at PBIR 1/4 mile. I wanted to see what the car would do the way I drive it on the road. I did not use lunch control, held the brake and launched at about 1800 rpm. 60 ft was about 1.77, time was 10.45, trap 134.
Michelin PSS, rear 50, front 46. What could be achievable with drags and proper launch? Stage 2+ (catless exhaust tune and ICs) mine my 10.316 at 132 with 1.51 60 foot with Pilot Super Sports. Your 60 foot time is slow. Real slow. Drag radials or R888 will help. You are running way way way too much pressure on those pilot super sports. You should be at 26 to 28 pounds rear and about 31-32 pounds front. PDCC should be off. No AC. Spoilers retracted. Usually launch control with side stepping the foot of the brake works best. |
Originally Posted by sdg1871
(Post 4631113)
Not great results with that much power. At
Stage 2+ (catless exhaust tune and ICs) mine my 10.316 at 132 with 1.51 60 foot with Pilot Super Sports. Your 60 foot time is slow. Real slow. Drag radials or R888 will help. You are running way way way too much pressure on those pilot super sports. You should be at 26 to 28 pounds rear and about 31-32 pounds front. PDCC should be off. No AC. Spoilers retracted. Usually launch control with side stepping the foot of the brake works best. |
Drags will get you 1.5s 60 with no slip.
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^ this is true...here's mine with R888...and there was still some slippage
https://cimg1.ibsrv.net/gimg/www.6sp...a078c6f66d.jpg |
Originally Posted by cfpchfc1
No doubt! I just wonder how much it would improve. My first run wheels spun miserably, 60 ft at about 2.3 and trap at 131.
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This is on MTs. And this is a notoriously poorly prepped track. On a good track you could be 1.4s.
https://cimg1.ibsrv.net/gimg/www.6sp...6be52dd5e1.jpg |
Originally Posted by sdg1871
(Post 4631113)
Not great results with that much power. At
Stage 2+ (catless exhaust tune and ICs) mine my 10.316 at 132 with 1.51 60 foot with Pilot Super Sports. Your 60 foot time is slow. Real slow. Drag radials or R888 will help. You are running way way way too much pressure on those pilot super sports. You should be at 26 to 28 pounds rear and about 31-32 pounds front. PDCC should be off. No AC. Spoilers retracted. Usually launch control with side stepping the foot of the brake works best. |
Originally Posted by cfpchfc1
Ate you flooring the gas to activate launch control?
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134 is man fast, thats sport bike numbers!
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how much more terminal speed could it pick up with drag radials?
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Originally Posted by cfpchfc1
(Post 4631433)
how much more terminal speed could it pick up with drag radials?
A lot. With R888's in the rear, you should be where Nanook is at: 10.1 @ 140mph. I just did 138.9 with my 997.2 last weekend on an uphill 1/4 mile track and it has about 100 wheel HP less than your 991. My 991 has your exact bolt on set up except I will use 100% meth and a little more fine-tuning of the tune. With R888 rears I will be expecting 142-143mph In hot summer temps. |
Originally Posted by longboarder
(Post 4631572)
A lot. With R888's in the rear, you should be where Nanook is at: 10.1 @ 140mph. I just did 138.9 with my 997.2 last weekend on an uphill 1/4 mile track and it has about 100 wheel HP less than your 991. My 991 has your exact bolt on set up except I will use 100% meth and a little more fine-tuning of the tune. With R888 rears I will be expecting 142-143mph In hot summer temps.
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Originally Posted by sdg1871
Yes I am
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Originally Posted by cfpchfc1
(Post 4631106)
I ran at PBIR 1/4 mile. I wanted to see what the car would do the way I drive it on the road. I did not use lunch control, held the brake and launched at about 1800 rpm. 60 ft was about 1.77, time was 10.45, trap 134.
Michelin PSS, rear 50, front 46. What could be achievable with drags and proper launch? |
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