custom tuning

SUPRA ULTIMATE JB4 GUIDE AND LOG REVIEW (V1) Been a busy 5 months learning nearly everything there is to know about JB4 on the B58 platform. Funny how trying to get my catless MT running right turned into countless log reviews and custom tuning on the JB4tech.com forum. As Jesse said it best...

Short of getting some equipment and pulling one myself. I am looking for a full backfile of a MKV ECU/DME. Preferably post June 2020. Looking to do some research on the data and benefit the community. Thanks if you have one!

We are now taking orders for EcuTek programming kits and power packages. Please keep an eye our our discussion thread for updates about our maps. All maps purchased will get free core updates until beta is closed (Estimated July 2020). To contact us you can message us here or: Phone: +1...