Looking to replace my exhaust and I've heard good things about the Yonaka cat back so I was going to go with that. My question is the previous owner installed what I'm assuming is a test pipe because I see no cat behind the headers, will this affect my purchase in any way?

 

Ill just assume you drive a Chevy cavalier and say probably not.

 

Get a cat because the Yonaka you want to buy will mount from the cat back to the mufffler.

 

Is there a test pipe or is it s straight pipe to the header?
If the former then you only need the Yonaka. If he latter you will also need a cat or test pipe depending on emissions/inspections in your area.

 

We don't have inspections here, and I believe it is a test pipe after seeing a few images of those.

 

If you're sure then all you need is the catback.