JST Results/Blog

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...

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

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,...

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...

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...