Variable Restrictiveness Exhaust

[xxalexx at ix.netcom.com]

These have been around since 1910 ? after muffler invented,
probably the first performance device made.
Also one of  the first devices to be outlawed.
Peak popularity 30's -50's ? standard equip. on some cars?
Commonly known as a cut out. 
You will get more power if you cut out the muffler,
also have seen lower emissions.
The honey comb cat is a laminar flow element and you
get a very turbo sound.  The only problem if running rich 
for long periods and backfires, you might spit out pieces of
the cat or the substrate could seperate. 
Alex
> At 04:10 PM 5/13/99 -0300, you wrote:
> >I saw an exhaust diverter valve in the J C Whitney catalog which will allow
> >you to do just what you are suggesting.  The device is controlled by a
> >mechanical cable.
> >Tom Butler
> >
> >
> 	The racing version of the 3rd generation Fbody had a Y that went to the
> side of the car and had a bolt on cap with a gasket for street use.  Could
> be rare to find but simmilar setup may be available for the current cars.
> Could be built also and dont know what smog cops will think.  
> 
> 						Todd Israels
> 
> 
> 
>