Re: Catalytic Convert Replacement

On Fri, 15 Aug 2008 16:11:09 -0400, Shep wrote:

> The difference is like running one cat on a dual exhaust engine and no
cat 
> on the other, the slight difference in back pressure, will not cause a 
> vibration, if this is what you mean.


Yes it will.  One bank with significant resistance followed by another
bank
with little resistance will cause vibration.  With no cat there will
definitely be vibration.  With mismatched cats there will be vibration.
That is simple fluid dynamics.  The question is will the difference in
styles and sizes of cats make enough of a vibration to significantly
affect
long term engine wear.  Since you reject basic science your answer is
totally invalid.  Go back to science class and study basic fluid dynamics.
Racers understand this and that is why they go to great lengths to balance
flow in intakes and exhaust, especially in those high revving grand prix
racers.