Not quite. When exhaust cools it contracts. As the exhaust comes out of the
cylinder it has alot of velocity. It will squeeze through just about anything.
The problem is that as it travels down the pipe it loses this energy and needs
tubing with less restriction to prevent it from slowing down so much that it
slows down the stuff upstream.
Dr. Pat
----------
>From: Dak99RT@aol.com
>To: dakota-truck@buffnet.net
>Subject: Re: DML: Re: What Cat-Back System is Recommended??
>Date: Sat, Mar 13, 1999, 2:46 AM
>
> In a message dated 3/12/99 3:21:57 PM Eastern Standard Time,
> Jpm699@email.msn.com writes:
>
> << I don't think adding a 3" pipe after the muffler will do much
> good unless the rest of your exhaust system is 3" as well, which if you did
> you would notice a loss in your low end.
> >>
>
> I'm not so sure about that. As exhaust cools it expands. I believe this is why
> the R/T has a 2" y-pipe into the cat then 2 1/2" out of the cat and into the
> muffler and 3" out of the muffler. Anyone care to comment? Is this what Dodge
> calls a "tuned" exhaust?
> Charles
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