Just had my 5th BMW tuned by ESS (550i, 435i, X5, M3 and now my M5!)... I cant believe how much smoother the car feels, and how much power it added! Also, dealing with AJ was great as he answered my million questions about BMW tuning and mods... couldnt be happier with the money spent and will continue going there for my future vehicles!

Called and the owner took the time to answer like entry level questions and explain with breakdowns. Repeated customer instantly

After lots of research, I went with an ESS tune over the JB4 for my 2008 335i and I couldnt be happier. The flash install was super easy and the customer support team answered my emails almost instantly. The flash totally changed the car. After installing the stage 2 flash, when I would mash the accelerator, the front end of the car would lift up like a muscle car. The horsepower gains are REAL. The ESS tune is a must have for an N54 or N55 engines!

Ive had ESS Performance Products on all five of the BMWs I have owned and every one of them was the best quality, materials, and reliability I have ever seen. Not once did I have an issue over all these year. I highly recommend them!

Ive had ESS Performance products on multiple vehicles over the years. Most recently, I had their flash tune on my F10 M5 and I currently have their supercharger kit on my 16 Mustang GT. Always phenomenal service and great products. Couldnt be happier!

Great customer service and even better products. ESS has been the #1 supplier of BMW supercharger kits and after a trip to their shop, it’s easy to see why. The product quality is simply outstanding.

These are incredibly dishonest people! Look elsewhere.