Ok I took off my air pump and now I have no AIR injection for the cat (duh), and I was wonderin if anyone knew if I needed a 3 way cat or 2 way cat. Which one won't clog with no AIR??

 

i would say a two way.. I THINK the only difference is a 2 way doesn't use AIR and therefore doesn't reduce as many gaseous polutants as a 3 way does.. a 3 way reduces carbon monoxide, hydrocarbons, and nitrogen oxides... and i THINK that a 2 way desn't reduce Hydrocarbons because it doesn't have AIR injection..

I am not 100% sure of this, so i may be wrong..

 

I thought that our cars had 2 ways stock.

 

When I was shopping for cats, I noticed a lot of 3-ways didn't have AIR fittings, if that's any help.




I could use a 3 way right about now.

 

hmm i am confused... i know that most new cats are 3 ways..

 

Yeah I thought 2 ways required AIR and 3 ways don't. LT1's and LS1's use 3 ways and dont have AIR.

I was just seeing if anyone knew for sure.

 

I have a 3 way catco and it has AIR