any ideas on po172+175
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any ideas on po172+175
Im getting a po172+175 codes checked the basics out all looks good car runs fine except at about2000rpm just vary light throtle vary small stumble .throws the code once every two weeks or so and both at once.borrowed a mass air sensor from a friend no change i wont have acsess to a scanner till sat. to see so live footage.what should I be looking at thanks for the help.also its been tuned for a year and this just started so I know tune is good. thanks.