[SoftTalker]

Is that what a "smog pump" is (was)? LOL. I had heard the term but never knew what it was.

Along the same lines then as other emissions equipment that reduced fuel economy but achieved the ppm criteria in the exhaust. Yes, let's address pollution by burning more fuel.

[CamperBob2]

Yes, and it has absolutely nothing to do with increasing air volume. The idea is to lower hydrocarbon emissions by burning them off in the exhaust manifold.

[MisterTea]

Depends on the vehicle. Again, I was in a medium duty truck where this system was used.

[CamperBob2]

No, it does not "depend on the vehicle." Stop spreading bullshit. Failing that, do it elsewhere.