Re: Fake cat (meow :) )

["Chris DeLong" <green536@hotmail.com>]

>
>Eric,
>That sounds like a good idea, but a couple questions.
>
>1. If you use a high flow cat. and 2" exhaust instead of the
>stock one and the 1 5/8"? stock exhaust you gain a few hp
>from less restriction right?

Right.


>2. How much extra hp are you gaining with the straight pipe
>idea over the 2" high flow cat with 2" exhaust?

Not sure exactly. It has to be at least 3 hp ;)


>3. Will it pass the sniffer test without a cat.

If you have a good running engine I know by WA state emissions that you will 
pass no problem. I had a Rabbit once with a 1.8 10.5-1 CR no knock sensor 
and a single DFAV 2 barrel progressive downdraught carb with one vacuum line 
(to the dist advance canister) and the readings on the CO were .02 % and 
thee HC was 25 ppm.

One sidenote: I just realized that someeone had meentioned to get a used ct 
from a junkyard. If you find one dont tell anyone cause it is against 
federal law to sell a used cat to the public. Punishable by a 10k$ fine I 
beleive.


.
>
>
> >go find any old cat in a junkyard that is a little bigger than your 
>pipe(ie
> >2 1/4" if you have 2") and not rusted out, hollow it out so you can see
> >through it and put a piece of pipe inside it thats the same size as your
> >exhaust.  Weld the sucker up and youve got an instant straight pipe "cat"
> >for not much cash.  Shouldnt restrict flow any either if you use the same
> >size pipe.
> >
> >Eric Person
> >86.5 16v (w/no cat)
> >
> >At 02:16 PM 2/14/00 -0800, M. Hansen wrote:
> >>Hi All:
> >>Just installed a tt downpipe and exhaust I got for $50 off of a wrecked
> >>GTI.  Sure wakes up the old beast and it finally sounds as healthy as
> >>the rest of the cars in my garage.  Really like that raspy sound above
> >>4000 too.  My problem is that I am facing emission testing for the first
> >>time in 6 months and they do a visual inspection for a cat converter.  I
> >>really don't want to ditch the downpipe for a tt cat downpipe so I was
> >>thinking of installing a cat right behind the downpipe after the shift
> >>box.  Physically there is enough room and this would let me pass the
> >>visual test.  I'm not so concerned about the effectiveness of the cat so
> >>far back from the engine.  My friend with an 84 Rabbit installed a built
> >>2.0L 8-valve last year and passed emissions with flying colours not soon
> >>after.  this was with g-grind, 10:1 comp, and porting.  So I figure that
> >>my 'roc should pass easily as well.  What are your experiences with this
> >>and do you have any suggestions?  Any help is appreciated.
> >>
> >>Mike Hansen
> >>83 Scirocco GT
> >>
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> >>
> >
> >
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>
>
>
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Chris DeLong
ICQ#45030867
Seattle, WA USA
'80 16V Rag
'65 Bus (ugly, but good for campin' W/toaster oven)
'82 GLI (now with a happy shaved, solenoid operated trunk)
'80 'Vert
'61 17 Window
'78 Scirocco


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