What Cats to buy?

[djrasras]

So I have emissions coming up this year meaning I got to put some cats in my car soon. I am running Stainless Works headers without cats right now, because with the IPF SC I obviously couldn't have ordered the high-flow cats. I dont want to buy the SW high flow cats and gut them and risk not passing, so I want to know if anyone has bought Cats that can resist the heat of the supercharger. I don't want to use my stock ones because they are welded on to the stock exhaust manifold that I took out and are rusty as hell.

[TommyTheCat]

Originally Posted by djrasras

So I have emissions coming up this year meaning I got to put some cats in my car soon. I am running Stainless Works headers without cats right now, because with the IPF SC I obviously couldn't have ordered the high-flow cats. I dont want to buy the SW high flow cats and gut them and risk not passing, so I want to know if anyone has bought Cats that can resist the heat of the supercharger. I don't want to use my stock ones because they are welded on to the stock exhaust manifold that I took out and are rusty as hell.

i don't know how inspections work for you there but here in commie cali no car can pass with any high flow cats.

what I would do is empty out your stock cats if you know you won't want to return to stock, and then just put those on if you're trying to pass a visual inspection. if the MIL/CEL matters, get it tuned out. then as long as your state doesn't care about the supercharger you're good and will have more power than with expensive high flow cats

hope that helps, my two cents. I will always go against HFC just because catless is better

[djrasras]

Originally Posted by TommyTheCat

i don't know how inspections work for you there but here in commie cali no car can pass with any high flow cats.

what I would do is empty out your stock cats if you know you won't want to return to stock, and then just put those on if you're trying to pass a visual inspection. if the MIL/CEL matters, get it tuned out. then as long as your state doesn't care about the supercharger you're good and will have more power than with expensive high flow cats

hope that helps, my two cents. I will always go against HFC just because catless is better

Thanks for the advice. Can you explain what you mean by getting the CEL "tuned out"? I didn't know you could do that

[Ventmaster]

Unless you've already got a check engine light, your tune is taking care of it now (I think all the IPF tunes include that).

If Maryland does a "sniffer" test, you're gonna need to put the stock cats back inline as close to the stock position as possible.

I put my stock cats back in with a LT header/no cat tune, and had no adverse effects.

[djrasras]

So I guess I'll just take my stock cats and just have a shop cut them off the stock headers and clamp them on temporarily for emissions