[cRiPpLe_rOoStEr]

Originally Posted by Xist

I have heard of cars where they piped some of the exhaust back into the engine to burn the fuel more completely, but I do not know what other techniques there are.

I was just thinking that it would be silly, you have a tiny, yet efficient engine, putting out a fraction of the particulates of a standard engine, but since its airflow is so low, it fails. Could someone install a blower ahead of the muffler to pull in outside air and thin out the exhaust?

Am I a bad person for thinking of this?

I'd rather get forced induction (or some combustion enhancement supplementary injection with water+ethanol) instead of that exhaust oxidizing pump trick.