Stock exhaust system

[Natty]

I want to get this straight, on an S13 KA24DE, the exhuast system goes from the engine to the exhuast manifold, to the down pipe, to some pipes, to the catalytic converter, to some more pipes, to the muffler, right? I can't look under my car to see enough.

A few questions too.
What are headers? Another name for the exhuast manifold?
Is the down pipe actually part of the exhusat manifold?
I am looking at a Pacesetter system and I need to find out how much it replaces.
Thanks,
Jeff

[sykikchimp]

should be exhaust manifold-downpipe-Cat-piping (includes resonator-etc..)-muffler

If its a catback exhaust which I believe the pacesetter is..  you will have:

mani-downpipe-Cat-PACESETTER.

you get headers:

Headers-Cat-Pacesetter..  (emmisions legal)

I think the Hotshot header for the S13 replaces the cat as well..  so then you would have,.,,

Header-Pacesetter.  (not emmisions legal)

Headers are generally made to increase exhaust gas velocity and allow for less turbulence.  I think they only have 4-2-1 long tube headers for the S13 DOHC.  They work better becaue the exhaust gas travels equal lengths through each tube (larger than OEM mani/downpipe) before being brought together with the rest at the connections.  That makes for less turbulence, and Higher gas velocity, = More horse power b/c of less restriction.

Not all headers are equal length, and there are also 4-1 headers that skip the "-2-" step.  They are generally shorter..  for example the Greddy Headers for the S14.

[gsrcamel]

save yourself and the criticism and get a nice exhaust. greddy makes good headers, apexi makes 3 exhaust 4 ure car. just keep an eye out for specials. dont screw your self w/ paceshitter! c-ya

[sykikchimp]

.. greddy makes good headers, but not for his car.  they are only available for the S14.  I think Hotshot makes the best ones out there for the S13.  (maybe the only one)

LOTS of companies make exhaust for our car in japan b/c of the huge following the S chassis had their.  and b/c exhausts are chassis specific, then we get the luxury of all their kick ass exhausts.   they include Greddy, Apexi, 5zigen, bla, bla...