I'm thinking on hollowing mine out for "test purposes only" lol

Anyway... here's what I'm thinking...

Cut the pipe about 2-3" behind the cats (only with a sawzall). Unbolt the cat from the manifold. Proceed to remove substrate. Bolt cat back onto manifold. Wrap cut with heat resistant muffler wrap (don't wanna be too damned loud) and drive to an exhaust place ASAP.

Sound like a plan?

 

Are you just wanting to see the difference with it like that?

 

I've done it .... about the same thing you said you did in fact. If I were working on a stock or almost stock truck, then I wouldn't worry abou tit honestly, not unless you NEED the increased flow.

 

man my truck is running great with carsound cats.

 

prob wont gain much

 

Arnt ya gonna need to turn off some o2's so you dont throw codes? Or atleast sims

 

A friend of mine gutted the cats on his 'stang. He actually lost power from it because he had dual 3" pipe on a stock engine. It sounded a lot meaner though.

 

They are already off...like my EGR.