JST Results/Blog

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...

Juan has been searching for 12s in his Focus ST for quite some time. By switching over to our tune and with a little trackside coaching, Juan was able to not only break into the 12s, but he also broke...

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,...

Well guys, i guess the question of " is over 300whp possible on the stock turbo on a Focus ST?" has been answered. These pulls were done in our 2015 Focus ST Time Attack Car. The same car that has...

Check out the v-dyno results from our customer Juan's Focus ST! We can't wait to see this thing tearing up the dragstrip soon!! Full Bolt ons, E35 , Max Preload on the wastegate, JSTUNED Custom E30 E-Tune

Check out the v-dyno results from Doug Boswell's Focus ST tuned by Brian Tyson! She made a whopping 356whp/371wtq Mods: TB performance 3 in catless dp w/defouler Injen 3in car back exhaust Cpe exhale kit with hks bov Cpe hot...