JST Results/Blog

We picked up 52 whp and 58 wtq with our JSTuned Custom Stage 1 dyno tune on this amazing Focus RS! She feels like a completely different car with just a few modifications! Mods- Air Filter, Spark Plugs, AP and...

Something new in the shop this week at JST Performance. Joe Holcomb from Atlanta,GA made the drive down to our shop in his brand new 2016 Ford Focus RS to have a Cobb Accessport installed and a custom dyno tune...

Thanks Corey for letting us custom tune your Fiesta ST!We came up with 208 whp and 275 wtq on our dyno! Modifications:COBB Acessport, JST Custom Stage 2 Tune on 93 OctaneMishimoto IntercoolerMishimoto oil catch can

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...