JB4

22500 kilometer

First of all, about the Jb4, it's a great product and easy to install. After doing some research on the internet to find a product that does not remove the warranty and give a lot of hp. I found the site of Bms.

I started to read a little more about this product and I got it for my car. The thing to know is that the product, it's contains several map and the product is only changing what the sensor sees. You not rewrite the ecu. The map that comes preinstall is the map 1 then there is the map 2 which is a little more aggressive and finally there is the map 6 (it's a custom map). I will return to map 6 a bit later

After receiving my Jb4, I went to my garage to install it, after a few minutes (30 minutes). I had finished installing everything.I went on the road. Just amazing, the power is totally different. I said to myself, I have to test map two now. Once again I did not recognize the car. Where is my little golf r.

Several weeks have passe after installation and I am still satisfied. The difference is that, I add some parts. This is the time to try the map 6, what is fantastic about this product, to use the map 6, just need to make a log, send it to George from BMS and he will adjust the map for you and he maximize it. After several log and email with George, the car is even better. The service with George is totally free, for the first buyer of the product. So I advise not to buy it use, to have the full potential of the product.

To conclude, I recommend this product. For the price you will not find better.Simple and easy to use. To know more about the product and the map go visit the website https://www.burgertuning.com/vw_volkswagen_Group1_JB1_tuner.html