May have found a solution for the drone on the cheap ebay exhausts!

[boxxster]

I would imagine it would be easier to just buy a set of cat bypass pipes on ebay (I paid about $150 for mine a few years ago) than to make the fabspeed mid pipes work with the stock muffler and u-pipes. I have a set on my 04 S with the stock headers and muffler. I'd prefer it a bit louder, but the trade off is that there is absolutely no drone. The car sounds more or less stock except at full throttle and/or high rpms where there is a nice rasp and a bit more volume. I've driven a Cayman with the maxflo system and know what you mean about the drone/resonance in that rpm range.

[PeterBleakney]

Thanks for this!

[Qingdao]

Got my cheapo ebay muffler, but I'm not running a stock engine. So I hope it doesn't drone.

[geekdaddy]

Hey folks I'm still relatively new to the Boxster. Had mine for only 18 mos but have read a lot of exhaust threads trying to understand options and potential for drone.

I also had a Fiat X1/9 (don't laugh -- they're fun) that droned horribly after I put a performance header and exhaust on it. I used inserts like the ones shown here and they reduced the drone but never eliminated it. Most of insert companies recommend stuffing them with steel wool or adding more baffles to further calm the drone -- but then you're also reducing the performance of your exhaust. A good company with a lot of experience developing baffles is here: https://www.carchemistry.com/

Several forum members indicate that the stock muffler and larger/heavier aftermarket mufflers don't drone because of their mass.

Seems clear that long-tube headers, removal of cat restrictions, and a lighter muffler will cause drone every time in our Boxsters.

The question is, can you change some of these items (header, and/or midpipe, and/or muffler) to improve performance or reduce weight without adding drone -- or incurring minimal drone.

[Gilles]

Originally Posted by geekdaddy

I also had a Fiat X1/9 (don't laugh -- they're fun

Hello Geekdaddy, I had several X1/9's as well, and actually got married on one :-)
You can imagine the bride on the passenger seat with the wedding dress and all the trimmings on..

[Dave80GTSi]

Originally Posted by Gilles

Hello Geekdaddy, I had several X1/9's as well, and actually got married on one :-)
You can imagine the bride on the passenger seat with the wedding dress and all the trimmings on..

I bought my 1978 X1/9 new, and sold it in 2016 (38 years later) because I stumbled across my 2000 S at a price too good to pass by. My garage was not large enough to hold yet another car, and so something (the X) had to go.

Farewell pictures that I took before I sold it: https://s1152.photobucket.com/user/dave80gtsi/library/1978%20X1-9?sort=9&page=1

Perhaps we should start a new "X1/9 Appreciation" thread!

[Gilles]

Originally Posted by Dave80GTSi

I bought my 1978 X1/9 new, and sold it in 2016 (38 years later) because I stumbled across my 2000 S at a price too good to pass by. My garage was not large enough to hold yet another car, and so something (the X) had to go.

Farewell pictures that I took before I sold it: https://s1152.photobucket.com/user/dave80gtsi/library/1978%20X1-9?sort=9&page=1

Perhaps we should start a new "X1/9 Appreciation" thread!

Dave, thank you for the pictures, that was a beautiful X1/9 !! I am sure that you sold it very well.

The only thing I would have done to it, was first to remove the ugly ladder bumpers and replace them with the '74 bumpers and second to install the Uno Turbo engine that has been sitting on my garage for more than a decade..

Thank you for sharing this pictures :-)

PS: My first X1/9 was a 1980, then a 1986 (the one I got married in), another 1986 (bought NS around 1998-99) then another 1984-85 (..?) and a '74 that I was planning to restore but lost the storage (and the car..)