changed lambda sensor and cat. but emissions still veryhigh
how many miles since plugs were changed?
changed plugs today they were 2 prong put in 4prong and changed airfilter
Did that work or was that before the test?
fitted after the test
Have you done another test to see if plugs work if they don't try map sensor
Looking for a Used 3 Series in your area?
CarGurus has 37,814 nationwide 3 Series listings starting at $1,700.
Search BMW 3 Series Questions
BMW 3 Series Experts