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Added April 10, 2023 by mitch_t_bimmer
Just replaced fuel tank breather valve. It was idling slightly choppy. Still felt choppy after the change but felt MUCH smoother. Drove better after. Had a strange periodic surging. Square wave function like. Can be observed when the exhaust vanos required jumps up briefly, flat lines then comes back down.
  • 91 Octane
Just replaced fuel tank breather valve. It was idling slightly choppy. Still felt choppy after the change but felt MUCH smoother. Drove better after. Had a strange periodic surging. Square wave function like. Can be observed when the exhaust vanos required jumps up briefly, flat lines then comes back down.
Fuel Type: