jb4

I'am selling my JB4 kit for VW, AUDI SEAT, EA888 Gen3 MQB motor (Mk7 Golf R/GTI, S3, Cupra) USB data cable included. More info here: https://progressiveparts.com/bm-jb4...888-gen3-mqb-mk7-golf-gti-s3-8v-tts-mk3-cupra Send me a PM for pictures or more info.

Hello, Im selling JB4 AFR Harness for 2.0 TSI with OPF/GPF/Particle Filter models. This AFR extension harness, will give you an extra wire, to avoid tap the factory one. Normal JB4 owners tap the factory wiring harness to get the AFR signal, with this, you dont need to do it and you can tap...

I am selling my JB4 kit for VW, AUDI og SEAT, VW, AUDI, SEAT, EA888 Gen3 MQB motor (Mk7 Golf R/GTI, S3, Cupra) It has only been installed one time - USB data cable included. More info here: https://progressiveparts.com/bm-jb4-vag-tuning-box-for-ea888-gen3-mqb-mk7-golf-gti-s3-8v-tts-mk3-cupra...

Hi All, So I decided to take the plunge and purchase a JB4 which i spent Tuesday fitting. Managed to get it all sorted out, although the bluetooth module didn't seem to get picked up by two separate phones but i've given George at BMS an email about that and he's sent out a chip that should...

Has anyone got any pics of where and how to route the OBD cable for the JB4 on a RHD Cupra? Is the passenger footwell the best option or is there somewhere in the drivers side footwell? Thanks for any help.

Hi all, So, I've recently bought my 2014 Leon 1.8 and I'm really loving it (previously had a 1.2 Ibiza copa so pretty big change for me). I've been looking around online for opinions on remaps or engine chips but wanted to get an up-to-date take on them. I've looked at stage 1 maps with Celtic...

Hi All I'm relatively new here I've ordered a Leon Cupra ST 300 DSG7...I've not had a test drive of the exact car but I've gathered the exhaust on the non R or Carbon version is quiet...and I won't be able to do the res delete. My question is, after speaking with a friend with Cupra SC (2017...

I was wondering if anyone has installed a JB4 on their Cupra. I took a test drive in the Cupra ST 300 4drive recently and loved it, what a car. So I will order one in a couple of weeks. :) However although not slow by any means, my GTI motor with JB4 felt about as quick so I'm looking to...

Hello all, Spent most of this weekend logging on my JB4. So basically when I log my car when it's standard (map 0). AFR starts off around 14.5 and only drops to 14 at the red Line. Which I thought was a bit to lean. When I switch to map 2 the AFR drops to around 12.8 at the red Line meaning a...