BMS VW GTI JB4 info thread

[DrFunkalupicus]

I just got my JB4 (used) with Bluetooth. I have a tank full of 87 in there now. Should I wait till I can burn through that and then put in 93? Or can I hook it up and just not enable any Maps?

You can set it to map 0 I believe

 

[Creton]

I've installed the JB4 Gen3b in my Bettle.
Does the steering wheel controls work for changing the maps on the Bettle?

 

[goodvibes]

 

[DrFunkalupicus]

I've installed the JB4 Gen3b in my Bettle.
Does the steering wheel controls work for changing the maps on the Bettle?

Nope. You’ll need the data cable or a BT module for the JB4 and the app on a mobile device or a laptop to make any changes

 

[Creton]

Nope. You’ll need the data cable or a BT module for the JB4 and the app on a mobile device or a laptop to make any changes

Thank you for the information.

 

[shovelhd]

Some flash tunes in the MKIV era let you choose the tune by flicking a turn signal or wiper stalk. Not true with JB4 obviously.

 

[Drincc]

So I somehow managed to bust the retainer on the connector going into Plug D during my install. It won't come apart because of the way I ziptied between the wires on both ends, but if I have to replace it down the line, anyone know the part number at all?

JB1 is what this car needed, though! And remind me to just do that one from the bottom.

Also curious if anyone who got the prepaid maintenance plans with their in-warranty cars even bother taking them out when going in for service. With the way I have it now, it's going to be a bitch to take it in and out all the time.

 

[battle.munky]

Alright, I need another set of eyes if someone can help us out.

https://datazap.me/u/battlemunky/log-1627172096?log=0&data=1-5-9-19-36

@Vesta Turan and I went out to get some logs and we're not completely sure if we got them right or not. We were in 3rd (DSG) as low of rpm as possible and then floored it until >6k rpm. We really have no idea wtf we're looking at so we don't know if we got good data or if the date we got is showing normal operation. The data seems to track with rpm/gear/throttle vs. pedal/mph but a few of the logs we collected are a bit wonky. The one above seems to have two log runs but we were pretty sure we weren't combining them.

We want to move to map 2 but want to make sure everything is working as expected first. Any help is appreciated.

Here is another one:

https://datazap.me/u/battlemunky/log-1627171862?log=0&data=1-3-4-5-9-19-36


All we have is a drop in K&N filter and the JB4, of course.

Thanks!

 

[Diggs24]

Intercooler

 

[Buck43]

I would strongly second the intercooler, I’m assuming temps were relatively high the day of logging? FMIC time!

 

[battle.munky]

Yeah, it was a solid 95 F out there. FMIC is on the list for sure.

 

[HashtagAbe]

I pulled some logs from my otherwise stock 2016 gti. Wondering some someone can give me advice on dialing in this 91 oct tune. It was a warm day, ambient temp was in the mid 90s. FMIC is certainly something I need to invest in.

https://datazap.me/u/hashtagabe/mk7-gti-jb4?log=1&data=1-4

 

[ChrisMk77]

I pulled some logs from my otherwise stock 2016 gti. Wondering some someone can give me advice on dialing in this 91 oct tune. It was a warm day, ambient temp was in the mid 90s. FMIC is certainly something I need to invest in.

https://datazap.me/u/hashtagabe/mk7-gti-jb4?log=1&data=1-4

Dialing it in how, like no timing pull at all? Other than installing an IC you will either have to blend in ethanol or just add 3psi for now.

 

[HashtagAbe]

Dialing it in how, like no timing pull at all? Other than installing an IC you will either have to blend in ethanol or just add 3psi for now.

Yea I would prefer to limit any timing pull. FMIC is coming soon. Im planning on getting a solid 91oct map then adding some E and work on a solid E30 map.

 

[jramirez8791]

So mu buddy just sent me his jb4 and he said he forgot to unpair from his Bluetooth, is it as simple as goin into setting and finding unpair tab?