the Bursch is made in Pasadena. Doug Robinson is the owner and a Porsche guy 1973 911, a hot rod guy, dry lakes and Bonneville guy. They sell a lot through Pelican. I have one on my '73 911 for 10 years or so.......I like the system a lot!

I have the Bursch cat bypass pipe and the Dynomax 1 in 1 out. At idle the car sounds awesome but on full accelaration it is really loud...and then the blap blap blap when you let off the gas. I swapped it out with my original cat and found the whole system to be much more quiet but still more growl than stock. I am going to have a 12" resonator welded into the bypass. This should end the blap blap blap on decel and still keep the aggressive sound..if not, I am back to original cat.


Matt