Exhaust recomendations for an 01 Boxster S?

[kyleturner2020]

Maxflo hands down.

[jwade]

See my mods. Get them and you will be very happy!!!

[Daniel R]

It is true, the stock setup is hard to beat.

I have however changed the headers for some cheap Chinese ebay specials, exceptional for the price. I have also removed the catalysts and put 2" bypass pipes in their place.

More power? Maybe a little. Better sound? It is louder, more throaty and metallic like a Porsche should be, but without the drone like a ricer. This I attribute to the muffler remaining stock.

To be quite honest it was more trouble and cost than it was worth, for little benefit, but it was fun to tinker around with it.

[landrovered]

I have headers, no cats and a modified stock muffler and I think it is the best setup for the money. I too would like a bit lower tone at low rpms but not at the cost of a droning exhaust. My current setup sounds stock until you put your foot in it and then it is plenty low and plenty loud.

[jmatta]

Best bang for the buck is the modified stock exhaust and secondary cat bypass pipes. You can find a local welder that can do the bypass conversion on the cheap and there are options for the cat pipes; I went with "like new" used Fabspeed pipes.

[Boxster..S]

Hi, I have installed a set of BB headers for a 2.5 with that cat system and a factory S sport mufler and rased fuel pressure about .3 bar. The dyno gain was 12hp peak and 17hp at 7200 . Note, I did have to extend the wires for the O2 sensors . The sound is very good , I enjoy driving my S with this setup.