Barber Motorsports Park
March 21, 2021
2016 GT4, track alignment with Tarett LCAs, Soul 200 cel street headers and Cobb off the shelf tune. Bridgestone RE71R tires 265 front & 285 rear (what was available).
This car is fantastic. Below is from my 4th session in the car ever; what made the difference was using the Garmin Catalyst. Based on this, I'm confident that a 1:36 is in this car.

 

Well congrats on taking the new top spot at Barber! Nice work... any video?

 

Thanks Geo; you will reclaim soon I'm sure.
The Garmin unit does take video, but I don't know how to lift just this one lap.
Any Garmin users willing to assist?

 

https://support.garmin.com/en-US/?fa...qC3ESA7YBwHrw6

 

Thank you, Burner.
That file is 30 minutes plus; I like this community too much to post something that long. If I can figure out how to grab that lap, I will.
In short, we likely all drive a similar lap (perhaps if you use slicks, it could vary some). The Garmin device gave me opportunities and those made more than a second difference. I am not affiliated with Garmin and it was my first attempt at using its AI to turn a better lap. If you have the chance to try one, give it a go.

 

First shakedown at NJMP Thunderbolt with the car.
Falken RT660 265/295 on GS1R
Dundon Headers into Soul Performance Exhaust
Dundon Runners/ IPD/GT3 throttle/ Softronic Tune
DSC controller/ TPC toe links/ RSS Front caster and toe bits/ Track alignment
1:28.1

by https://www.flickr.com/photos/25421740@N04/, on Flickr

by https://www.flickr.com/photos/25421740@N04/, on Flickr

 

How did you like the RT660's? The RE71R supply is drying up so I am looking into other 19" options for my GT4.

 

That's a great time and should but you on the top for Thunderbolt. I'd love to see some video.

 

Feels just like RE71 to me, Falken came back strong.

Thanks but I also know other GT4 owners that arent on rennlist that are .7 - 1.2 second faster on similar setup.
My gorpro settings werent correct and my video is just of the incabin with a completely white view out in the windshield
Will post up video when I get back onto T-bolt in future.

 

Stock 718 on Dunlops

1:24.29

50 degree day after rain so track conditions were cold and slow. Impressed with numbers given conditions.

 

My first real track day with this car at Sebring - 2:23.3 with AIM showing a theoretical of 2:22.3

2016 981 GT4
265/295 Falken RT660 on BC Forged 19x9 and 19x11
Dundon headers
RSS rear toe arms
Tarrett camber plates
BGB Track alignment
Stock PCCB brakes

I'm battling an issue where the car limps out if I shift above 7,000rpm which I've narrowed down to the crank position sensor (after already replacing coils and adding heat shields). I was forced to shift around 6,700rpm max all day to keep the car happy. I think the car has 21s in it on a cooler day (was 90+ degrees) and a full rev range.

 

my car had a faulty crank position sensor. I couldn’t rev past 7000k rpm

 

Nice lap. My new reference. Seems like you had some strong acceleration compared to my car. Maybe gear selection? Thx for posting.

 

Thanks, were you at Sebring last Friday with PDG as well? I saw a few other GT4's but only had the opportunity to speak with one of the owners.

 

No, I was there last Thursday with Dimmit and then this weekend I was there with Chin but brought my crap can Miata "24 hour of Lemons" car for a shake down run.