JST Results/Blog

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...

Another RS in today at JST Performance! Phil brought his Focus RS to us from Warner Robins,GA to have a set of NGK 1 step colder plugs, a Green drop in filter, and a Cobb Accessport installed on his car....

Some pretty sweet results from Jose Chino's Stage 2 Focus ST. This car has just very basic modifications including a CP-E Intake, NGK 1 step colder spark plugs, JST Performance intercooler kit, a preloaded wastegate actuator and of course a...

Finished up our Mountune B4 package Stage 1 #focusrs dyno tune earlier today via #cobb #accessport...here are the results as promised...350 whp/411 wtq on our dyno!

We were able to put Jason Smith's 2016 Ford Focus RS on our dyno earlier this week! Here are the results! Modifications:-Custom dyno tune from Brian Tyson at JST Performance via Cobb Accessport-Mountune Intake, Charge pipes, Bypass Valve-Turbosmart 10 psi...

After power modifications, one of the more common (and as an added bonus, one of the cheapest) ways to make a track car faster is to pull as much of the extra weight out of the car as you can (and maybe...