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-   -   High Flow Cat without Air Tube - Anyone make one? (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/high-flow-cat-without-air-tube-anyone-make-one-997223/)

1st to 3rd 05-03-12 09:21 PM

High Flow Cat without Air Tube - Anyone make one?
 
I don't need to pass emissions, just need a cat for visual purposes and I don't have a smog pump. Does anyone make a high flow mid pipe without the air tube? Thanks.

Ryan95 05-03-12 09:27 PM

Just run a dummy tube to it

Mahjik 05-03-12 09:43 PM

You could purchase a metallic substrate cat, then just cut a midpipe and use bands or have it welded into place. They won't do much for emissions, but if you only have a visual check they are technically a cat.

Jason 05-03-12 10:35 PM

Just buy a resonated mid pipe. They won't know the difference as long as it looks like a cat.

DaleClark 05-04-12 07:30 AM

You could have one custom built without the tube, or just buy one, cut the tube off and have it welded shut.

Dale

mrb63083 05-04-12 10:05 AM

Will a high flow cat burn up or anything without air supplied to it?

1st to 3rd 05-04-12 11:57 AM


Originally Posted by Mahjik (Post 11078318)
You could purchase a metallic substrate cat, then just cut a midpipe and use bands or have it welded into place. They won't do much for emissions, but if you only have a visual check they are technically a cat.

This is the route I was considering if there is not off the shelf solution. It's cheap and clean, just a bit of extra work.

Jason, I have a resonated MP. Between the smell and overall appearance of the muffler... I can't imagine it would fool anyone.

Jeff5808 05-04-12 12:37 PM

I bought one off RX7store.net and the tube for the air pump was plugged off, I had to have the pipe removed off the old cat and welded onto the highflow at a machine shop.

Jeff5808 05-04-12 12:40 PM


Originally Posted by mrb63083 (Post 11078827)
Will a high flow cat burn up or anything without air supplied to it?

No, the airpump is for emissions. I guess it could help cool things off, but its not necessary.


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