Exhaust recomendations for an 01 Boxster S?

[docmorin]

The upside would be transporting a hot pizza from the local italian joint. It would be like a mobile hotplate.

I'm beginning to think that stock exhaust is the way to go.

I not interested in the exhaust being so loud that it is overwhelming. I was just looking for that throaty sound and loud ONLY when you get on it. I was also looking to increase horsepower without compromising the core performance................. I've now heard Fabspeed-Maxflow and Borla if any at all.

Is that reasonable or a waste of time?

Doc

[Johnny Danger]

How about a custom 9FF cat back exhaust, along with a set of custom M&M headers and HJS high flow cats. The total cost would be around 60K. Nigh on to 10K for the exhaust system, and the remaining 50K toward retaining a good divorce lawyer.

[JAAY]

Stock S-Muffler, headers, cat delete................

[Lightning]

If you don't want your car to turn the CEL on and "throw a code", I would keep the stock headers (on your car, the O2 sensors look at the catalytic converters that are on the headers) and maybe try "cat bypass pipes" to replace your secondary catalytic converter assemblies. That will up the volume without creating resonance.

Then if that's not loud enough, you could change the muffler out for one of the Dansk units (a Porsche OEM manufacturer, TUV certified, and due to the single chamber/cross-flow construction, no resonance). They sometimes come up on eBay. There is also an internal hack to make the stock muffler louder (search the forums).

If you replace the headers, then you will need to move the O2 sensors to the downstream "secondary" catalytic converters. Some also replace the secondary cats with "sport cats", which ups the sound a little more.

Most of these changes will probably not increase torque. Some may increase HP in the upper range...

[MN 986]

Originally Posted by docmorin

I not interested in the exhaust being so loud that it is overwhelming. I was just looking for that throaty sound and loud ONLY when you get on it.
Doc

The mod to increase the sound of the OEM muffler is the 'Crios mod', and you will find it with a search. I did it a year ago and was happy with the difference, which I think was more at idle than higher RPM (maybe because the de-snorkled intake sound was louder than the exhaust at high RPM).
I still wanted a little more sound with no drone, and I prefer the twin tailpipe look vs. the OEM muffler on my 2002 2.7, so this spring I changed the OEM muffler for a FVD/Brombacher 'Sound version' muffler. It has a little more rumble than the Crios mod at idle, and more sound as the RPM increases, especially over 4kRPM. It is not much louder than OEM when cruising on the highway. Like the Dansk unit, it has the stamped look of the OEM muffler, which supposedly helps with drone. They claim a hp increase, but that is not why I bought it. I certainly did not detect any reduction in power, there is no drone, and it sounds and looks great.
I have been following this forum for a couple of years now, and it seems that opinions on mufflers/exhaust systems vary quite a bit.
Check out all the options, and good luck!