Re: Any good exhaust upgrades? - Saab 9000 Bulletin Board - Saabnet.com
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Re: Any good exhaust upgrades?
Posted by Bob (more from Bob) on Mon, 16 Oct 2000 18:46:38
In Reply to: Any good exhaust upgrades?, Owen, Mon, 16 Oct 2000 16:49:25
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Go with 3" exhaust from the turbo back. Stock diameter is 2-1/4".
A 2.5" exhaust will give you about a 23% increase in flow area,
whereas the 3" exhaust gives about 78% more area. You want
better flow for the turbo to spool-up quicker, plus the increased
area means better heat transfer for higher exhaust temperature,
which a tuned engine will increase. I've just ordered all the parts
for my system: a 3" in/out cat', Magnaflow (straight-through
design) rear muffler, no resonator, and a 3" downpipe off of
the turbo. The cat' and Magnaflow can be ordered on-line
from a number of sources. The downpipe can be had from
various places: Abbott makes one (abbottracing.com). I
have a feeling that there are a few places in Sweden that
sell them. You might want to check out a place called
Speedparts, I'm not sure if they have a web-site.
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