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    • Before and After BMS JB4 tuning acceleration results from a 2019 Mustang Ecoboost

      The BMS JB4 is on everything these days, eh? The best way to show how well it works is with a simple before and after acceleration result. That is why you are buying it after all, isn't it? To improve power, torque, and acceleration.


      Well, it works and works well on the 2019 Mustang Ecoboost. You will not be able to beat this bang for the buck.

      Quote Originally Posted by BMS
      Was able to get our hands on a 2019 EcoBoost Mustang for a little stock and JB4 testing. The JB4 is a quick install tuning system that DOES NOT require you to reflash the ECU. The car is fully factory including factory tires. Temps were in the 60s for each run and testing was done on ~93 octane.

      Best stock run was 13.71@99mph, best JB4 map2 run was 13.09@102. 0-60mph improved from 5.53s to 4.61s Clearly a lot more on the table with more aggressive JB4 mapping but pleased to see the huge acceleration improvement!



      This article was originally published in forum thread: Before and After BMS JB4 tuning acceleration results from a 2019 Mustang Ecoboost started by Sticky View original post