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bit of confusion on exhausts

Yes, looks and sound voer performance. Shocking isn't it? Someone wants something that looks and sounds good, besides adding hp? If you read my email more, you would have noticed it's a stock car. The difference between a good looking muffler that sounds decent and some expensive, stock looking, high performance muffler would be probably equal 1hp, maybe 2. Whoa, look out. Are you sure you don't need a 500hp mustang instead of a VW? Well, thanks for the input regardless of the low blow.

Dan

--- "Rabbit16v" <Rabbit16v@attbi.com> wrote:
>Your going for more 'looks' and 'sound' rather than "performance"?  Are you
>sure you don't need a Honda, not a VW?  Usually a good looking muffler won't
>be the best sounding one (as far as my experience is concerned).  If you
>notice the higher performance and nicer sounding mufflers are the Magna
>flows or the stockish looking stainless steel mufflers.  Just put a nice
>sounding performance type muffler on there and dress it up with a
>conservative tip.  My 2 cents!
>
>Dave
>----- Original Message -----
>From: "Dan Smith" <sad_rocc@veedub.com>
>To: <scirocco-l@scirocco.org>
>Sent: Tuesday, November 26, 2002 12:29 PM
>Subject: RE: bit of confusion on exhausts
>
>
>> Well, I don't know why I didn't think of this before, but does anyone have
>good aftermarket muffler reccommendations? I'm looking for something along
>the lines of low purr/growl as opposed to high, annoying buzz. I have some
>Audi muffler on now and it doesn't sound like much at low rpms but when I
>step on it and get into the higher rpms its got a really nice, deeper hum.
>Here is what I'm looking at for mufflers. I'm going more for looks and sound
>than performance.
>> 1.
>http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33636&item
>=1873521173&rd=1
>> 2.
>http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6771&item=
>1873503132&rd=1
>> 3.
>http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1873400152
>>
>> I prefer 2 and 3 because I know how the exhaust travels in them and I know
>what's inside, where as #1 could be stuffed with cotton for all I know.
>Also, 2 and 3 are straight through. 2 has the typical canisters on rice cars
>which makes me leery of the fartcan sound but 3 is a bit expensive.
>>
>> Dan
>> --- "Joe Doty" <rocco2nr@hotmail.com> wrote:
>> >I totally agree on the backpressure being a myth thing.  I think it's a
>> >word made up by people who don't know what the hell is going on.
>> >
>> >I don't think you have to worry about losing low end, if that's what
>> >you're stressing.  However I would recommend getting at least one
>> >resonator to avoid the fart can sound....its tough to make a free
>> >flowing 4 cyl exhaust sound good.
>> >
>> >Joe Doty
>> >IT/Development
>> >joe@lcnetwork.com
>> >
>> >-----Original Message-----
>> >From: Dan Smith [mailto:sad_rocc@veedub.com]
>> >Sent: Tuesday, November 26, 2002 11:40 AM
>> >To: Ryan H; scirocco-l@scirocco.org
>> >Subject: Re: bit of confusion on exhausts
>> >
>> >Well, that makes sense. For more info, the TT exhaust is 2.25", the
>> >muffler is 2.5" inlet, dual 3" outlets. (God I hope it doesn't sound
>> >like a fartcan) It seems velocity would be the same as in a stock setup,
>> >as the sizes aren't changing, just the restrictions, or lack of. Am I
>> >correct? And do others agree that backpressure is a myth?
>> >
>> >Dan
>> >
>> >--- Ryan H <rhock99@epix.net> wrote:
>> >>I can't answer your question about your exhaust, but I can offer my
>> >knowledge on back pressure...
>> >>This is a big myth... from what I have read, you don't want ANY
>> >backpressure, you want exhaust gas velocity.  The reason people think
>> >you need backpressure is simple: If your engine only generates 250 cfm
>> >of exhaust gases, and you have a 3.5" exhaust, the exhaust has so much
>> >room when it makes it to your 3.5 inch pipe, that it has no need to move
>> >further down the pipe, and it creates a sort of wall.  This causes
>> >exhaust gas velocities to slow, and interferes with the ability of the
>> >exhaust system to "scavenge" exhaust gases from the engine when the
>> >exhaust valves are open.  This means the engine has to force exhaust
>> >gases out the valves, instead of it being sucked out by the exhaust
>> >system, and this is where systems with "too little backpressure" (in
>> >truth, exhaust gas velocity) lose their power.
>> >>I guess it would take some experimentation on your part to see what
>> >allows your car the maximum exhaust flow rate.
>> >>
>> >>>
>> >>> From: Dan Smith <sad_rocc@veedub.com>
>> >>> Date: 2002/11/26 Tue PM 01:59:12 EST
>> >>> To: scirocco-l@scirocco.org
>> >>> Subject: bit of confusion on exhausts
>> >>>
>> >>> I have a stock 1.8l 16v, which hopefully at some point will change.
>> >I've been looking into an aluminized TT setup with no resonator and
>> >swapping the muffler for a fireball dual tip straight-thru design. I've
>> >heard though that you want some backpressure and if your exhaust is too
>> >free flowing, then you actually lose power. What exactly is the real
>> >deal on this? And would this setup be too free flowing? Suggestions,
>> >comments, ect.
>> >>>
>> >>> Dan
>> >>>
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>> >>
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