Matt [exz3owner said:
@ Fri Sep 01, 2006 6:46 am]good looking car, Andrew. How did your friend get caught? I would think that a turbo miata is going to be busted for having a turbo and modified exhaust well before you are busted for a test pipe. My supra had a 4" cat that we welded into the downpipe. it didn't look like a cat at all. It looked like a 4" pipe. A cop isn't qualified to say what is OEM equipment, and what is not. All they can do is send you to a referee.
on another note - hollowing out a cat will create a resonating chamber in yor exhaust and in my experience, made the car significantly larger.
Thanks,
my friend said they pulled him over because he had a loud exhaust.. they further inspected his car and saw that he had a JR s/c..
then he said they sent over one of those special task forces.. they came over inspected my friend's car, and told him to turn it on rev it a couple times etc..
he said that is too loud and looked under the car with a mirror and saw no cat..