JB4 (wireless or data cable)
Thread Starter
Super Member
Joined: Feb 2017
Posts: 681
Likes: 90
From: SWF
2020GLC63
JB4 (wireless or data cable)
About to pull the trigger on a JB4 instead of going ecu flash for multiple reasons. Regardless looks like there is two options for uploading tunes. Assuming most everyone goes with the Wireless so they can use a phone app, yes? Thought I read something about water damage since these units go under the hood. Any advice is more than welcome.
Junior Member
Joined: Aug 2020
Posts: 41
Likes: 6
2020 AMG GLC63
About to pull the trigger on a JB4 instead of going ecu flash for multiple reasons. Regardless looks like there is two options for uploading tunes. Assuming most everyone goes with the Wireless so they can use a phone app, yes? Thought I read something about water damage since these units go under the hood. Any advice is more than welcome.
Thread Starter
Super Member
Joined: Feb 2017
Posts: 681
Likes: 90
From: SWF
2020GLC63
I’m going to get the Bluetooth module. I’ve used the wired connection in the past just a pain to pull out a laptop every time I want to make a change. Let me know how you like the JB4 when you get it, looking in that same direction since there is nothing really out for the 2020 that doesn’t require a bench flash.
Junior Member
Joined: Aug 2020
Posts: 41
Likes: 6
2020 AMG GLC63
I'm honestly back and forth. Had a schedule in with Eurocharnged but they said they don't know if I'd have to leave the car over for 24h if there isn't a tune or something long those lines. I'm pretty far away from them and would need to sleep over which is difficult for me. My other two options are pull ECU out myself and send to them or I just get the JB4 and be done with it. Seems gains are very similarly yet you have more flexibility with JB4 especially if you have E85
Senior Member
Joined: Oct 2018
Posts: 324
Likes: 61
From: Massachusetts
Blk/Blk GLC43 AMG WAGON
If you're looking to justify the JB4 purchase because waiting for the Eurocharged tune is simply inconvenient (I get it) but EOD an ECU flash is simply safer for your vehicle. I would just be patient and wait for them to come out with a tune that doesn't require a layover and/or pulling and sending in an ECU. Just my opinion. Your car, your money, your decision. Peace !
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