Bogging

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Do you have an ODB2 scanner capable of graphing PID's? If you did it might make short work of your of your problem.

Graph:
  • Short term fuel trim (STFT) bank 1 and 2
  • fuel pressure
  • MAF flow.
  • EGR flow (DPFE)
  • timing advance
Drive the car through several turns. Look for the PID's that change in an unexpected ways.

ForScan ODB2 scanner w ELM327 USB
 
Do you have an ODB2 scanner capable of graphing PID's? If you did it might make short work of your of your problem.

Graph:
  • Short term fuel trim (STFT) bank 1 and 2
  • fuel pressure
  • MAF flow.
  • EGR flow (DPFE)
  • timing advance
Drive the car through several turns. Look for the PID's that change in an unexpected ways.

ForScan ODB2 scanner w ELM327 USB
I do have a friend that does, we changed fuel filter cleaned MAF sensor.. I guess I'll be cleaning EGR next ... Thanks for your input...