Need Help With JB4
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Mercedes C43
Need Help With JB4
I have a 2020 C43 and I installed just the JB4 mod and I didn’t feel any difference at all. Fortunately I talked with Terry and I got a Boost Control Module. I’m hoping this works will plan to set it all up the first of July. Also if anyone else has a 2020 C43 with a JB4 did you have the same problem?
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2019 C43 AMG
Had a 2019 with a JB4 and sold it because of this very thing...didn't feel much in terms of gains like I did on my 2018. Would love to know how it feels for you once you get the BCM installed. Was told by Terry that adding the BCM would bring it back to the gains felt with the pre-facelift models.
Keep us posted.
Keep us posted.
I have a 2020 C43 and I installed just the JB4 mod and I didn’t feel any difference at all. Fortunately I talked with Terry and I got a Boost Control Module. I’m hoping this works will plan to set it all up the first of July. Also if anyone else has a 2020 C43 with a JB4 did you have the same problem?
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C43 AMG
How does the BCM work? Is it controlled via the hand held or bluetooth? I'm probably going this route until AMR can get an update for the 2020.. How much WHP/WTQ gain should I expect with the JB4 on the 2020's? Do we have more potential than the PFL with the bigger turbo's? Are stock internals pretty strong for more boost?
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The BCM plugs in to the JB4 harness and in to the easy to reach boost solenoid so the JB4 can adjust wastegate dutycycle directly rather than having to reply on the mapped-too-low factory tables.
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Mercedes C43
So I’ve installed the BCM and JB4 still don’t feel much of a difference. Maybe it’s too early to tell. Does anyone know when I can use Map 2 do I need something additional to use Map 2 properly?
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Mercedes C43
Would you know how much psi I should be pushing in terms of map 0, map 1 and map 2?
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2019 C43 AMG Coupe
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I have a 2020 with JB4 installed.
I am curious about getting a BMC.
Does it require constant adjusting and monitoring or is it simply plug it in and play?
I am curious about getting a BMC.
Does it require constant adjusting and monitoring or is it simply plug it in and play?
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From: Colorado
2019 C43 AMG Coupe
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From: in a van down by the river...
2020 C43 sedan(hers), 2021 Porsche 992 TurboS(his)
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2019 C43 AMG Coupe
Right. If it were me, I would run logs and send them over to BMS for a sanity check, but there is no further manual adjustment needed for the stock maps. If you are working with BMS toward a custom map, that's a different story. Make sense?
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2019 C43 AMG Coupe
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