JST Results/Blog

We had the the opportunity to custom dyno tune a customer's Full Bolt on Stage 3 Fiesta ST at our facility. We wound up making 228whp/330wtq! The gains over the entire power band were pretty remarkable, and you can definitely...

279whp/387wtq MBRP Turboback Turbosmart BOV Green Filter 1 Step Colder Plugs JST Performance Mishimoto Intercooler 93 Octane

We recently had the privilege of taking a customer's 2013 Focus ST from completely stock to beast mode with the installation of a handful of mods and some JST Performance Dyno time! Check out the results! Mod lists:-Cobb Accessport with...

2015 Ford Fiesta STCobb Accessport with JST Performance custom 93 octane dyno tuneCobb Front mount intercooler core with stock charge pipesCobb rear motor mountDenso ITV22 Plugs

We finally had the chance to put our 2015 Manual PP EB Mustang up on our dyno. She currently has a COBB filter, 1 step colder spark plugs, 10psi WGA, and a JSTUNED custom stage 1 dyno tune. We were...

As we all know, the Ecoboost Mustang has the potential to be a really fast straight line car with a few modifications and a tune. However, the JST Performance Mustang was purchased for more than just straight line performance. We...

We originally purchased our 2015 Focus ST to be a top contender as a national level autocross prospect. It was our intention to build the car to fit in the SCCA stock autocross classing, however, since then the car has...