Catalytic converter question

[Danster]

What difference is there between a non air tube vs an air tube converter?

I am searching to purchase a cat on-line but not sure if it makes a difference on the Air Tube configuration?

Dannyo

 

[TurboDave]

Our cars don't use an air tube configuration (my 84 Z28 does), and so the cat I got came with the air tube nipple capped with a metal cap.

 

[turbolou]

Reply

What difference is there between a non air tube vs an air tube converter?

I am searching to purchase a cat on-line but not sure if it makes a difference on the Air Tube configuration?

Dannyo

The air tube was used to link up with vehicles that used a smog pump to light the cat off sooner mostly on warm up . So that makes the cat more universal in its application. Fortunately our cars passed emissions with out the need of a pump.