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1) Top Speed headers.
2) Top Speed cat delete pipes.
3) Standard S muffler.
Very quiet below 3,500rpm (so my wife says - we can still have a conversation), but by 4,000rpm it gets quite - er - loud.....especially with the hood down.
Fitted strait up, cheap power gain, good quality and no CEL's, but I'm ROW with only O2 sensors in the delete pipes.
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2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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