JST Results/Blog
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JST Focus ST First Shakedown in GLTC form at Roebling Road!
We let our intrusive thoughts win and decided to un-retire our Focus ST Time Attack car to turn it into a Gridlife GLTC car.
Honda ECU unlocks exclusively at JST Performance!
We are excited to be the first and only shop that can offer COBB Tuning jailbreaks for Civic Type R and Integra Type S ECU's. If you don't mind driving to our shop in central Georgia, the unlock only takes a...
500+ whp in a COBB/JST Custom Tuned Honda Civic Type R!
Can 500+whp be obtained from a FL5 tuned via COBB Accessport? Why yes it can, and we did it!
Honda Civic Type R (FL5) Custom Tune Results via COBB Accessport
We know Cobb isn't being used very much so far for these cars, but after tuning literally thousands of cars on other platforms on Cobb, and tuning our own FL5 these past few weeks I am very happy with it so far! While not even pushing things to the limit, we have picked up 100whp so far with barely any modifications at all...Most of this is from tuning.
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Tuned 2022 GR86 Dyno Results (Updated 1/30/23 for added parts)
Ecuteck has finally released support for the GR86 and we wasted no time in getting ours on the dyno with our amazing in-house tuner behind the computer! After a pretty full day of tuning he was finally able to get the...
GR86 Bolt on Dyno results
In the past week or 2 we have installed and tested a few more minor bolt ons onto our 2022 GR86. The testing was done on multiple days/ conditions but our dyno can compensate for this and keep testing pretty...
JST Performance GR86/BRZ Parts Weight List (Updated Frequently)
This blog is all about weight! This will be a great future reference for parts weights for the 2022+ GR86 and BRZ platform. We will be updating this post frequently as we install more parts on our car and customer...
JST Performance GR86 Baseline Weights
We all know that when it comes to building any car for track use that weight is one of the most important factors to consider. At JST Performance we try to weigh as many different parts, cars, setups, and configurations as we...