I searched and found how to make your own. I have a test pipe that looks similar to the one below.

How hard would it be to put a heat shield around this to make it appear to be a real cat. I purchased the car with it already installed and I'm affraid of being checked by California Highway Patrol.

 

Catalytic converters have heatshields around them already. Find a toasted one, cut the crap off the outside of it, and weld it to the pipe.

 

there is a guy on here that made a real nice one. Look under serch for cats or test pipes. he even shows how he made it. looks good to.

 

Ok I found the tread. Its under fake cat under the serch. check it out

 

Anyone in Southern Cali have a blown Cat that I can have? If anyone else have one how much will it be to ship it to 90810.

I wonder if a muffler shop will just give me a blown cat for free.

 

Thats the tread where the guy made the fake cat and there is a pic of the testpipe that vision makes. It has prvisions for the heatsheald to be bolted onto it.
https://honda-tech.com/zerothread?id=618758

 

yea, that the tread I got this idea from.