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Jb4 tuner issues

Mveldheer

Newish Member
Joined
Aug 12, 2024
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Hello, I recently had limp mode on the car from the tuner. Then took it apart and put it back in. And it was running just fine all week and on my way home, I accelerated and the CEL flicked on. There was no code found on the JB4 and the car could accelerate and coasted to 0mph. The car’s engine seemed to have shaked. Then I turned the car off then on again and it worked as if nothing happened. No CEL, no rough idle.

Anyone else have issues like that?

This has been a difficult experience for me with the JB4.
 
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