Having a hard time at track - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

EvilZL1 · 03-28-2016, 12:00 PM

For a while now I've been on MT 20", and I'm still stuck in the 12s as an auto. With street tires the best run ive made is around 12.8, with Mickeys Ive been stuck at 12.1 for the last two track visits. Tire pressure all the way down to 18 psi, cooled down for a while, nice decent burnout to heat them up. Problem is that the car surges after launch. Shifts from 2-4 within the first 300ft. I know it has to be hurting my time. Tuner adjusted the shift points and said they were low, but the problem still occurred. Then he stated that the car may be spinning and the computer is trying to play catch up by upshifting to the appropriate gear. Obviously I need help on my launches but Have no idea what I need to do. I feel as if I baby it out the first few feet that it will cost me a lot of time instead of hooking and moving. Any input? My MPH is also low between 108-114, 60' is normally ranging 1.7-1.9. Mods are Headers, CAI, Catback and tune. Stock ZL1s are running lower times on stock tires, Im wondering why im struggling so hard.

ABADZL1 · 03-28-2016, 01:12 PM

Maybe your issue is at step #4. Since you've stated you don't want to do this. You are certainly within the average for this car with your given mods.

Launching a 6-Speed Automatic Camaro ZL1 for the Quarter Mile
Without the third pedal, there’s obviously less to think about here, but optimizing an automatic ZL1 for the quarter mile still takes more than simply mashing the gas.
1. Select the most-aggressive PTM Mode 5 setting.
2. Shift the transmission into M mode for manual. This will make the car start in first gear instead of the usual second in normal D mode.
3. Depress the brake pedal with your left foot and, using your right foot, press the accelerator pedal until the engine revs to about 1,500 rpm.
4. Release the brake pedal and roll on the throttle. After just 2-3 feet, you’ll want to be wide open on the accelerator pedal all the way through the quarter mile.
While purists might object to an automatic transmission, the proof of how quick an auto can shift is in the numbers. Chevy’s engineers had their best quarter-mile time in an automatic ZL1, running the distance in 11.94 seconds at 116 mph.

GoldCartridgeGamer · 03-28-2016, 01:39 PM

Seat time and launching. You still have a lot of practice.

Ice Demon · 03-28-2016, 02:04 PM

Quote:

Originally Posted by Lgndryhr

Seat time and launching. You still have a lot of practice.

Pro Stock John · 03-28-2016, 02:35 PM

my ss will shortshift if i spin on the launch.

EvilZL1 · 03-28-2016, 03:38 PM

Quote:

Originally Posted by Pro Stock John

my ss will shortshift if i spin on the launch.

Thats what we are thinking is the problem, so im going to give it some more seat time and do some trial and error to see if it was the problem.

ABADZL1 · 03-28-2016, 03:45 PM

Maybe we should do some data logging and see whats happening

Sent from my C811 4G using Tapatalk

Pro Stock John · 03-28-2016, 04:15 PM

12.1@114 is on the slow side of what I think your car should be able to run. What do other ZL1s run with similar stuff? Your tune or shift points might need some work. Need to log at the track. Took a ton of logging for me to run 10.9 with my mods.

EvilZL1 · 03-28-2016, 06:26 PM

Quote:

Originally Posted by Pro Stock John

12.1@114 is on the slow side of what I think your car should be able to run. What do other ZL1s run with similar stuff? Your tune or shift points might need some work. Need to log at the track. Took a ton of logging for me to run 10.9 with my mods.

Yea It is quite slow. Honestly I should be somewhere in the 11s , not quite exactly sure. Missed Ryan down here this previous friday, so I will have to wait for him to make another trip here for some logging.

Mr. Nasty · 03-28-2016, 08:31 PM

60' ranging 2ths difference your spinning off the line.

EvilZL1 · 03-28-2016, 09:11 PM

Quote:

Originally Posted by ABADZL1

Maybe we should do some data logging and see whats happening

Sent from my C811 4G using Tapatalk

Probably will do some logging over the next few weeks when i can get out before it gets too hot.

2013 ZL1 #7860 · 03-28-2016, 09:33 PM

Pull fuse 40 and 43 (ABS fuses).
Heat the tires up and launch just off idle (900-1,000 rpm).
Go full throttle immediately and hold it.
Keep transmission in M.
Practice.

03-28-2016, 12:00 PM	#1
EvilZL1 Snake Eater Drives: 2012 AGM ZL1 Join Date: Oct 2011 Location: TN Posts: 2,737	Having a hard time at track For a while now I've been on MT 20", and I'm still stuck in the 12s as an auto. With street tires the best run ive made is around 12.8, with Mickeys Ive been stuck at 12.1 for the last two track visits. Tire pressure all the way down to 18 psi, cooled down for a while, nice decent burnout to heat them up. Problem is that the car surges after launch. Shifts from 2-4 within the first 300ft. I know it has to be hurting my time. Tuner adjusted the shift points and said they were low, but the problem still occurred. Then he stated that the car may be spinning and the computer is trying to play catch up by upshifting to the appropriate gear. Obviously I need help on my launches but Have no idea what I need to do. I feel as if I baby it out the first few feet that it will cost me a lot of time instead of hooking and moving. Any input? My MPH is also low between 108-114, 60' is normally ranging 1.7-1.9. Mods are Headers, CAI, Catback and tune. Stock ZL1s are running lower times on stock tires, Im wondering why im struggling so hard. __________________ Build Thread: http://www.camaro5.com/forums/showth...95#post8351295 Make sure you don’t forget to subscribe to my channel! More content on the way. Like, share with your friends https://www.youtube.com/channel/UC9Z...sP2wjsLLFeP1zQ Follow me on instagram: http://www.instagram.com/snkeatr/

03-28-2016, 01:12 PM	#2
ABADZL1 ZL1 Pilot Drives: 2013 ZL1 Join Date: Apr 2014 Location: TN Posts: 1,670 View My Garage	Maybe your issue is at step #4. Since you've stated you don't want to do this. You are certainly within the average for this car with your given mods. Launching a 6-Speed Automatic Camaro ZL1 for the Quarter Mile Without the third pedal, there’s obviously less to think about here, but optimizing an automatic ZL1 for the quarter mile still takes more than simply mashing the gas. 1. Select the most-aggressive PTM Mode 5 setting. 2. Shift the transmission into M mode for manual. This will make the car start in first gear instead of the usual second in normal D mode. 3. Depress the brake pedal with your left foot and, using your right foot, press the accelerator pedal until the engine revs to about 1,500 rpm. 4. Release the brake pedal and roll on the throttle. After just 2-3 feet, you’ll want to be wide open on the accelerator pedal all the way through the quarter mile. While purists might object to an automatic transmission, the proof of how quick an auto can shift is in the numbers. Chevy’s engineers had their best quarter-mile time in an automatic ZL1, running the distance in 11.94 seconds at 116 mph. __________________ GP Tuning 2.5 Cam, RPS Carbon Twin Clutch, Ported Blower, Kook's Headers, Cold Air Inductions CAI, ID850's, 9.17 Lower, 2.5 Upper, JMS BAP, Pedders Front Radius Arm Inserts, Whiteline Subframe Inserts, Tuned by me with HP Tuners Idle Clip Link...........https://www.youtube.com/watch?v=gTL8S9eHwbs

03-28-2016, 01:39 PM	#3
GoldCartridgeGamer Drives: 2014 Ford SVT Raptor SuperCrew Join Date: Jun 2011 Location: Memphis, TN Posts: 7,527	Seat time and launching. You still have a lot of practice. __________________ Phoenix (sold) 2014 Ford SVT Raptor SuperCrew How to hug your camaro Buy the car that you would most like to get beat in. The other guy will always be faster.

03-28-2016, 02:35 PM	#5
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	my ss will shortshift if i spin on the launch. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

03-28-2016, 04:15 PM	#8
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	12.1@114 is on the slow side of what I think your car should be able to run. What do other ZL1s run with similar stuff? Your tune or shift points might need some work. Need to log at the track. Took a ton of logging for me to run 10.9 with my mods. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

03-28-2016, 03:45 PM	#7
ABADZL1 ZL1 Pilot Drives: 2013 ZL1 Join Date: Apr 2014 Location: TN Posts: 1,670 View My Garage	Maybe we should do some data logging and see whats happening Sent from my C811 4G using Tapatalk __________________ GP Tuning 2.5 Cam, RPS Carbon Twin Clutch, Ported Blower, Kook's Headers, Cold Air Inductions CAI, ID850's, 9.17 Lower, 2.5 Upper, JMS BAP, Pedders Front Radius Arm Inserts, Whiteline Subframe Inserts, Tuned by me with HP Tuners Idle Clip Link...........https://www.youtube.com/watch?v=gTL8S9eHwbs

03-28-2016, 08:31 PM	#10
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	60' ranging 2ths difference your spinning off the line. __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

03-28-2016, 09:33 PM	#12
2013 ZL1 #7860 Drives: 2013 ZL1 A6 #7860 Join Date: Apr 2014 Location: CO, USA Posts: 1,279	Pull fuse 40 and 43 (ABS fuses). Heat the tires up and launch just off idle (900-1,000 rpm). Go full throttle immediately and hold it. Keep transmission in M. Practice.