Uber Wagon 2.0

I was looking up piggies in the Archives, and I saw a post that the only good way to completely clean out the pre-cat was to cut it open, clean out, then re-weld it back on.

I know many say this is not necessary, but IF it were being done this way, why would you not just completely cut off the pre-cat and weld a piece of straight pipe in it's place?

Wouldn't that make better flow than an expansion tank mid stream in the downpipe? At least, it's less of a hassle than messing with the innards of a cat, and breathing in any catalyst powder.

I know you're still smaller in diameter than a real set of DPs, but wouldn't that be better than a cleaned out pre-cat?


What do you guys think? Anyone done this?

Dubs

This was just brought up last week. Check the Archives

golfrsi

because of how much a pain it would be to get it back to the proper shape.

Dubs

yeah that was the conscientious for that thread wasnt it

golfrsi

I think you just need to have cats,, not pre and main? In PA at least that's the case..

FixedWing

I think most states will have rules about removing or disabling the emissions control system.