DIYbanter - View Single Post - EPA caught VW cheating

SMS

On 9/19/2015 8:15 PM, wrote:

Exactly what are you trying to say??? My reply was to say there were
many instances of people - hobbyists and mechanics alike, screwing
with emmission controls in an attempt to defeat them and get better
mileage and power, and getting (usually) neither.

That was the big problem in California. A significant number of
out-of-compliance vehicles were causing most of the pollution. Even
though percentage-wise the number of such vehicles was small, in
absolute numbers it was large enough to cause a problem.

The "catalytic converter test pipe" was popular for a while. But as you
said, in most cases, all the tampering with emissions controls did not
have any effect on mileage and/or power.