View Full Version : 2 Q's about downpipes for KA-T

05-05-2002, 10:47 PM
Here are my Q's:
1)How do I attach it? Most people talk about bolting on the downpipe, but the exhaust housing of the turbo is only 1/2" thick. I'm thinking I have to weld something longer onto that, and then bolt my downpipe onto it.
And when you bolt up a downpipe, did you use a flange coupling, or overlapping tubes?
2)Will the downpipe remove the 1st cat on a s14? The one right behind the manifold, which I think is the real one. If it does, will that set off any OBD-II codes, or mess with my mixtures? I don't know where my 2nd O2 sensor is, but doesn't that just plug into the downpipe somewhere?
Thanks all!

05-06-2002, 08:52 PM
you will have an bend from the turbo. then near the steering shaft, you will have a flange and then another pipe that goes to the end of the resonater. this is on most cars.

yes you will no longer have a cat. but you can still get on like catco and put it in.