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FS:- JB4 Tuner for C63- C63s NEW

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Old Apr 3, 2020 | 03:39 PM
  #1  
jatt143's Avatar
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From: Bay Area California
2018 C63s AMG
FS:- JB4 Tuner for C63- C63s NEW

https://mbworld.org/forums/market/779009

Selling my JB4 Tuner with Bluetooth Module and Wiring Harness.

The unit is brand new just came from JB4. I sent mine in for repairs but they weren't able to repair/test due to low staff so they just sent me a brand new one
I'm going to do DP and Stage 2 so I won't be installing this back on.

Please PM me for more info.
Shipping and local pickup available

Asking Price:- $800





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Old Apr 3, 2020 | 04:11 PM
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BMS
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2018 C63 Sedan
JB4 is still very useful once flashed for logging, fine tuning, boost by gear, etc.
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Old Apr 3, 2020 | 04:22 PM
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Originally Posted by BMS
JB4 is still very useful once flashed for logging, fine-tuning, boost by gear, etc.
JB4 won't interfere with another tune on ecu?
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Old Apr 3, 2020 | 05:49 PM
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Just run map 0 and it's a passthrough
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Old Apr 3, 2020 | 06:11 PM
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BMS
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From: Simi Valley, California
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Originally Posted by jatt143
JB4 won't interfere with another tune on ecu?
Not at all! Map0 is a full pass through for logging only, you can skip the fuel pressure connections. Technically for just logging you only need to install 1 connection (rainbow boost sensor patch), and OBDII.

To do boost by gear, fine tuning (adding more boost at higher RPM), adding a little boost only when on higher octane or E85 mixtures, etc, would require all 4 boost connections but still does not require the 2 fuel pressure connections.
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