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On track experiences and video's 991 GT3 only.

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Old 02-09-2015, 09:45 PM
  #601  
allans
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Originally Posted by rm21
I got my GT3 in late December and have driven it nearly non-stop on the weekends to get past that pesky 2k break-in period. I finally hit the milestone this past week and took it to the track for the first time on Sunday at Atlanta Motorsports Park. As background, I previously had a 2014 Cayman S, and did about 35 track days with it. After bedding the brakes, it took me about five laps before I crushed my best Cayman times. I shaved 4 seconds off my personal best, and was running high 1:28s and low 1:29s pretty consistently. Once I've got some more seat time, I should be able to shave a few more seconds off. I'm going to Road Atlanta next weekend and VIR in late February, which are much faster tracks, so I expect the gaps will be even larger. Compared to the Cayman, the GT3 is so much more stable and confidence inspiring. Going from the mid-engine to rear-engine layout hasn't been as significant as I expected, but I'm not driving anywhere close to the limit yet. I ran the car stock on Sunday just to get a baseline. My track alignment is scheduled for next week and I'll be adding the Cantrell roll bar and 6-pts as soon as they arrive. Aside from the obvious safety improvement, I'm looking forward to being held in place by the 6 points, as this car pulls some serious G's and I was feeling it by the end of the morning!

I'm using the AIM solo with the OBD connection, but will switch that over to CAN when I get a chance and will get the brake and throttle graphs working. I also need to get an external mic hooked up, since the wind noise with the built in mic is pretty awful. Here is a quick video of a few laps.

http://youtu.be/1R0G0vH4S00
rm21. Very nice run at AMP. Hope to see you there soon. Allan
Old 02-10-2015, 08:08 PM
  #602  
TRAKCAR
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I misread 1.28's 1.29's at Road Atlanta. Need to back off the cool aide, the RS is not out yet.
Old 02-10-2015, 08:23 PM
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nice job rich, i did 1:29 in my .2RS on RA1's. crazy how fast the 991 is in stock trim
Old 02-10-2015, 08:33 PM
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I promise you its faster than that.
Old 02-11-2015, 09:43 PM
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i already know. at AMP horsepower doesnt matter. there will be a bigger delta at bigger tracks like RA, VIR, etc
Old 02-14-2015, 04:29 PM
  #606  
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Originally Posted by rm21
I got my GT3 in late December and have driven it nearly non-stop on the weekends to get past that pesky 2k break-in period. I finally hit the milestone this past week and took it to the track for the first time on Sunday at Atlanta Motorsports Park. As background, I previously had a 2014 Cayman S, and did about 35 track days with it. After bedding the brakes, it took me about five laps before I crushed my best Cayman times. I shaved 4 seconds off my personal best, and was running high 1:28s and low 1:29s pretty consistently. Once I've got some more seat time, I should be able to shave a few more seconds off. I'm going to Road Atlanta next weekend and VIR in late February, which are much faster tracks, so I expect the gaps will be even larger. Compared to the Cayman, the GT3 is so much more stable and confidence inspiring. Going from the mid-engine to rear-engine layout hasn't been as significant as I expected, but I'm not driving anywhere close to the limit yet. I ran the car stock on Sunday just to get a baseline. My track alignment is scheduled for next week and I'll be adding the Cantrell roll bar and 6-pts as soon as they arrive. Aside from the obvious safety improvement, I'm looking forward to being held in place by the 6 points, as this car pulls some serious G's and I was feeling it by the end of the morning! I'm using the AIM solo with the OBD connection, but will switch that over to CAN when I get a chance and will get the brake and throttle graphs working. I also need to get an external mic hooked up, since the wind noise with the built in mic is pretty awful. Here is a quick video of a few laps. Video Link: http://youtu.be/1R0G0vH4S00
I'll see you at VIR!! Based on the weather pattern it's going to be cold!!
Old 02-16-2015, 02:30 PM
  #607  
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Any of the track guys experiencing TPS issues?
We could never get them to keep working for more than a few laps on the 997's.
Any improvement?
Old 02-16-2015, 03:16 PM
  #608  
NMM991
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Originally Posted by TRAKCAR
Any of the track guys experiencing TPS issues?
We could never get them to keep working for more than a few laps on the 997's.
Any improvement?
I have 6 track days on a 2015, no problems with the TPMS if that is what you meant by TPS
Old 02-16-2015, 03:42 PM
  #609  
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tMPS idiosyncratic but once you get the hang of how it behaves it's reliable on the track and I find if damn useful for telling me when my tyres are at temperature and when they are starting to cook!!
Old 02-16-2015, 03:52 PM
  #610  
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Originally Posted by NMM991
I have 6 track days on a 2015, no problems with the TPMS if that is what you meant by TPS
Yes, so they display PSI on all wheels all of the time?

Originally Posted by Macca
tMPS idiosyncratic but once you get the hang of how it behaves it's reliable on the track and I find if damn useful for telling me when my tyres are at temperature and when they are starting to cook!!
Sure, I just like to know if its losing air or not.
Never got it to work on the 997's.

I swear that the car turned on the SC and TC once when it "knew" the tire was going down. Never had it confirmed by anyone else.

I saw TC and SC come on, thought WTH and turned it back off, it immediately turned back on and next corner I went flap flap flap and I understood. Maybe the rate if the PSI going down...
Old 02-16-2015, 04:49 PM
  #611  
MayorAdamWest
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Originally Posted by TRAKCAR
Any of the track guys experiencing TPS issues?
We could never get them to keep working for more than a few laps on the 997's.
Any improvement?

Old 02-16-2015, 08:07 PM
  #612  
rm21
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I haven't had any issues. I had them on my 2014 Cayman as well and they worked fine for many track days. I've found they are usually accurate within a pound. I leave the TPMS screen up while I'm on the track to see if I need to hot pit and adjust.
Old 02-17-2015, 01:53 AM
  #613  
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Umm. Yeah.....
Old 02-17-2015, 02:26 AM
  #614  
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Peter, TPM displays all 4 wheels and is on real time. If I slide the car around you see the pressures spike up.
Old 02-17-2015, 04:59 PM
  #615  
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Chasing Orthojoe @ Thunderhill (cyclone) yesterday. My PB was 1.58.5. I had to cut the session short because of back pain after skiing incident, hence my slowing down on 6th lap or so.



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