I have a header with a 2" collecter bolted to the stock cat, which is bolted to a 3" cat back.

​​​​​I cannot find test pipes for this car. I found a test pipe for 88-00 Integra that is 2.25" and 16" long wich is the length of my cat. I'm not sure what my stock cat diameter is but, will it fit bolt up?

 

You can't find any test pipes because the EPA has made it illegal to sell ANY equipment that modifies emissions related items on vehicles.

If the flanges and length are the same then it might fit but you're not gonna know until you try. I would be that at minimum the hanger locations are going to be different.

Maybe take a step back and ask yourself if this mod is worth the trouble in the first place. If it's an NA single cam, you're not going to do anything but make the car louder, make it stink, and potentially end up with fines. You will not gain any power with a test pipe on a stock engine. Even highly modified engines are virtually unrestricted by something like real 200 cell high flow cat. There is no benefit to deleting it. If your factory converter is at the end of it's service life, replace it with a suitable OE replacement.

 

the reason for doing it is because my factory cat hangs pretty low and scrapes with the header I have. I've raised the car back to stock height and I'm going to replace my engine mounts and if that doesn't help then I will need the test pipe.


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I bought the adjustable test pipe. It does not have hangers so I have to figure that out if I end up using it. If I do use it, I'll add a 18" resonator to my exhaust to stop the rasp.