IM LOOKING INTO CAT-BACK SYSTEMS AND I WAS WONDERING WHAT IS THE BEST FOR THE O3 SI.
Easy on the caps there, killer.
Do a search for "cat AND back AND exhaust" and you should find a bunch
of threads. Or search by manufacturer - "Greddy AND EVO" or "Magnaflow".
The best dyno gains I've seen are the Magnaflows. Plus, it's fairly
cheap ($275 or so on eBay).
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