🚀 go-pugleaf

jmorriso@ee.ubc.ca (John Paul Morrison) writes (and draws a fancy picture):
> vanderby@mprgate.mpr.ca (David Vanderbyl) writes:
> >(This, incidentally, is why a hole in your muffler cannot help
> > you pass emissions testing.)
> 
> Depending on the shape of the hole, and its position, the exhaust gases
> could easily, and conceivably create a vacuum, and suck in more air into
> the hole, thus diluting the exhaust.

This does not help you however because their testers pick up the extra air
in the exhaust and conclude that you have holes in your exhaust system.
This is what happened to me.  

I was told that they don't care about exhaust system holes though - they
just can't get proper readings if such exist.  The manager told me that if
my holes (half way along the exhaust system) had been big enough, they
would have just shoved the probe into one of them and got the necessary
readings.

Ken Buckland
kenb@ee.ubc.ca