4kq exhaust retrofit

[Huw Powell]

> Has anyone come across a way to install the O2 sensor in the exhaust manifold
> instead of the cat converter?

Go to hot rod shop, buy an "oxygen sensor bung".  drill 1" hole in
downpipe or next section, weld bung in place.

> I am wanting to do away with the cat converter
> as they are so expensive and the bolts holding the cat to the pipes have to
> be cut away each time you R&R the O2 sensor.

Get a high flow cat (on line, $50-70 or so), and weld it in.

Or, use your stock cat and new stainless steel hardware.  No more bolt
cutting...

and see:

http://www.humanspeakers.com/audi/exhaust.htm

for more voluminous notes....

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/