I was in your situation... the unknown... was overthinking how am I going to plug this, run the wires, do the BT app ... whats going on here?!?!?
But no.
Everything was very straight forward once I had the device and handled it, moreover the community here is great + Terry is amazing !
First, the JB4, super super super easy to connect. I had my
fuel wires PnP therefore it made it easier but the dpositap are not hard to add on.
The BT was straight forward as well, easy pdf to follow.
Running the obd2 cable through the firewall was actually very doable and not hard at all.
Pushed the grommet out a bit, took a metallic hanger, tape the cable to it.
Pushed the hanger through the top of the grommet.
Open the hood, took the 3 tabs off the cover on the driver side. Saw my hanger. Grabbed it to pull the cable.
Pull the hanger out.
Grabbed the grommet from the inside and pull it back - sealed, easy peasy !
Then you run the wires as you see fit.
Connect your phone to BT,JB4 connect, choose map 1 or 2 depending what you are starting with.
I had one small issue as I felt it was not pulling as fast as I thought.
Emailed Terry, he asked me to send logs and told me how to log.
Went on the highway, did two pulls, sent the email back, 15 mins later he told me to change one thing on the app and voila - all done. (thank you Terry !!!)
Honestly it is hard to wrap your head around what to do when you not in front of this but it is VERY straight forward and I must say that
@Terry@BMS was extremely fast to reply ! On Labour day nonetheless !!
PS: once on Sport mode and you try it ... you will know it is on, WOW

