exhaust stuff

[Dave Aukerman]

Brett,

No emissions in my state.  Does this change things? Arguably not.

A side benefit to the 'test' pipe is that I cured a loss of power in the
upper rpm's.  I think that with 172K on the original cat, was having it's
effect.  Why do they have 'test' pipes in the first place?  For the exact
reason that I'm using one.

As such, the 'test' pipe will be replaced in the summer with a proper high
flow cat.

My point for making the post is not to rally all of us to go out and kill
our cats.  My point is, as the post states, is to show where there are gains
to found.  A very big one is the cat.

BTW, my mileage also went up after the deletion.  Hmmmmm.

Dave

----- Original Message -----
From: "Brett Dikeman" <brett at cloud9.net>
To: "Dave Aukerman" <aukdav at ccsdana.net>; <quattro at audifans.com>
Sent: Wednesday, March 27, 2002 11:54 PM
Subject: Re: exhaust stuff


> At 3:22 PM -0500 3/27/02, Dave Aukerman wrote:
>
> >Fastfoward to a few weeks ago, the cat was removed and in its place a
spare
> >'stock' cat with a pipe running in the center of the section was
installed.
> >Major improvement.  Throttle response is way up and boost comes on much
> >sooner and stronger.  When they say the cat is the bottle neck they joke
> >not.  Bear in mind this is still a 2" in and out of the cat.  Improvement
> >still to come.  Total cost $couple hours of my time with a
> >pipe/hammer/welder.
> >
> >So what?  Save the money and go to the local exhaust place and have it
done.
> >Total cost is much lower than you think and the gains are substantial.
>
> Not to get preachy, but a)what you suggest is illegal and b)even if
> it wasn't, you're not doing the environment any favors.  Further,
> many states are going to on-dyno exhaust testing, stricter standards
> etc...you might get a big surprise next year at the emissions test.
>
> Suitable high flow catalytic converters are available from companies
> like Random Technologies and similar.
>
> That said, yes, in many ways having a local welder spend some time
> with the car isn't a bad idea at all.  Paul Royal designed his own
> system on his 90q20v, and it's quite nice.  I think the total cost
> was under $300 for a full system.  A summary of the PNs he used for
> ordering various pieces is hanging around somewhere in the archives.
>
> Brett
> --
> ----
> "They that give up essential liberty to obtain temporary
> safety deserve neither liberty nor safety." - Ben Franklin
> http://www.users.cloud9.net/~brett/
>