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    Car bogging randomly with black smoke

    I tested the relief valve with the monitoring and also physically inspected it and didn’t notice anything wrong. The fuel pressure wouldn’t build high enough to even begin to drop off. I also tested the fuel pressure off the in-tank pump and it only gave 33psi max. So I’m going to swap the...
  2. G

    Car bogging randomly with black smoke

    I went and did some logging. I wasn't able to add all the perimeters in versatuner but I got most. It looks like my fuel rail pressure is super low? (No more WOT once I noticed this). This log was a third and partial fourth gear pull. My RPM gauge might be off a little cause on my dash I...
  3. G

    Car bogging randomly with black smoke

    Ok, I should be able to take new logs tomorrow afternoon. I’ll post them here after.
  4. G

    Car bogging randomly with black smoke

    Hello, a little confused with my mazdaspeed 3 so I'm here. I am a little new to data logging and turbo cars. (Always owned old muscle cars). Car will pull steady and then randomly starts to cut out, can't accelerate through it. This used to only happen at 5,000 rpms but now it is happening...
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