Quote:
Originally Posted by RaisedOnPorsches
For a bit more info, the early 986s (1997-1999) did not have secondary cats and were still California emissions compliant. As for mods, there are several aftermarket exhaust manufacturers offering lower cell count, higher flow catalytic converters as part of their exhaust package. For example check out Fabspeed's full exhaust package for a 986 on Pelican Parts.
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Truthfully, it's likely just as easy and a LOT cheaper to swap back in the secondary cats if it doesn't pass with the primary cats I have in the headers. couple hours of wrenching and it's done...
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2000 S - Borla Exhaust, TS Cat Deletes, RSS UDP, B&M Short Shift, T96 Steering Wheel, Potenza RE-71R's,
Mantis 2.0L Deep Sump, de-snorkeled, Bilstein PSS9 Coil-Overs, Rennline lug studs, and auto crossed regularly.
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