986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 98 Boxster: Cat Delete Pipes Vs. Muffler Swap

Steve Tinker · 11-16-2015, 11:46 PM

I went the opposite route to Tom - still using the Top Speed headers and cat delete pipes but I retained the original (heavy) rear muffler. No drone at all but a crisper sound over 3,500 rpm.
It loses a little low down torque (below 3,000 rpm) but makes up for it above 4,500 rpm due to the slightly larger diameter piping.

11-16-2015, 11:46 PM	#5
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	I went the opposite route to Tom - still using the Top Speed headers and cat delete pipes but I retained the original (heavy) rear muffler. No drone at all but a crisper sound over 3,500 rpm. It loses a little low down torque (below 3,000 rpm) but makes up for it above 4,500 rpm due to the slightly larger diameter piping. __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.