Hi there my 2.0 auto 12/98 accord has been of road for a threw weeks whilst having new rear hubs disc and pads fitted, whilst cleaning it I decided to replace air filter with a non genuine part (not cheapest). Since it will not go over 4000 revs when on flat or on hills and just starts to kangaroo as if going to cut out. So I removed air filter and runs perfect if any thing improves performance. Has anyone come across this before ? Was thinking of maybe using an induction kit if going to improve performance. My engine management light has been on since I purchased it 3 years ago but run fine .