Originally Posted by
34_40
Since I work in water and waste water plants, one of our favorite sayings is, "the solution to pollution is dilution".. And that's what I've always seen as the purpose of those air pumps. Want to clean up the tailpipe? Push some air into the system! Guaranteed to lower the tailpipe number.
It was claimed to create an "afterburner effect" and the high temps would burn off the "unburnt" fuel... Yeah, right!
At least the PCV system would give you visible results. And for the better too! I'm old enough to remember cars with the road draft tube and smelling the fumes from the motor while waiting at a light.. no thanks, I'll run a pcv and enjoy breathing.