I am weighing out either a magnaflow or catco cat. I am a little nervous about the fact that there is an AIR tube on this one: http://cgi.ebay.com/ebaymotors/Catco...QQcmdZViewItem

would this affect my CA **** smog?

 

The AIR system on your car injects air into the exhaust manifolds. Therefore, an AIR tube on the cat itself is not needed. The Magnaflow cats seem to have a bit better reputation then the Catco ones.

 

well, I purchased a magnaflow cat off ebay. I hollowed mine out and when smog comes around I will get that cat in there. I know when I emptied mine out (it was a complete disaster) I def. got some power back! no more sound of rocks in my exhaust!

 

The AIR tube is capped on that from the factory. No problem in that regard.