JST Results/Blog

It's not often you see a Focus ST obtain more than 300 whp on the stock turbo, but it has been known to happen a few times here at JST Performance! After working on a car most of the day...

Nothing quite comes close to the excitement of prepping a racecar for your biggest event of the year! For us, the Global Time Attack/Formula Drift event at Road Atlanta is probably our favorite big event that we are scheduled to...

We created a beast! Jason brought his 100% stock Focus ST to us earlier this week for a full big turbo install and #jstuned custom dyno tune by the one and only Brian Tyson! She turned out an impressive 425whp/420wtq...

So it's been a little while since I have had the chance to write an updated blog post for the Time Attack FoST! There have been a lot of changes in my absence and to be quite honest, I don't...

2015 WRX. Cobb Stage 0 (stock) vs JSTUNED Stage 2. Mods: TGV deletes, Catless DP

We have decided to campaign the Time Attack FoST in NASA's Time Trial program as a TT3 car along with Global Time Attack's Limited FF Class for the 2017 race season. Of course, we won't be able to resist the occasional...

As most of our followers know, we started out selling parts and modifying Subarus a few years ago. This week it was nice to visit our roots for a bit. We had the privilege of installing some aftermarket parts on...

Another test to try to break 300whp on the stock turbo! This was done on a 2014 Ford Focus ST. Cobb Accessport with JST Performance custom tune, Steeda FMIC, Levels Catless DP, maxed out oem wastegate actuator, E30,ect, ect.. The car...

We have been asked numerous times about our set-up on the Time Attack FoST over the past several months as she has shown that she has the capabilities to be one of the fastest Focus ST's to date. I figured,...