Got a guy who's an independent Porsche/BMW/Benz mechanic. His personal cars include a '78 911 Turbo (dyno'd at 410 hp at the wheels) and a 2002 Ti Alpina and another 2002 racer. He has opined to me that an easy way to get good sound out of my car is to simply drill a large bore hole, longitudinally, through each muffler, effectively creating a straight pipe! Has anyone ever done this? On a Cayman? Will all of the muffler guts come spewing out the exhaust? If ever done, what does sound like? Drone? Shake, rattle and roll?

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'07 CS, Meteor Grey, stone grey, 19" Carrera Sport with meteor grey spokes/polished rim, headrest crests, bi-xenons, Bose, power seats, rain sensor, fire extinguisher, heated seats, dimming mirrors, FabSpeed Maxflo II catback
'06 CLS 500, white, beige
'04 Black Ranger Edge

I wouldn't drill into my exhaust system, but I would consider the free exhaust mod posted elsewhere in this forum. I think you need a couple of basic tools to slide open the connector pipe between the mufflers. Many people report a better sound, but some have complained about headaches after a few drives with the mod. You should be able to search for it. I'm only afraid to do this mod because I will get addicted to a better sound and then need to go aftermarket for a whole new exhaust to satisfy my addiction. Now where did I put those exhaust comparison videos...

The mod you mention was SOP for probably 90% of Harley Davidson motor cycles through the mid 1990s. Simply insert a lenght of metal pipe up each of the exhaust pipes, bang away with a mallet and punch out the baffles. Worked great. Around 1996 HD introduced catalytic imbedded exhausts (along with fuel injection) which ended the practice.

I would not attempt this on my CS, but I'm as mod adverse on my cars as I'm mod friendy on my motor cycles.

IIRC, Harley introduced the catalyzed mufflers in 2006, not 1996. Also, Harley introduced fuel injection in 1998 (Magneti Marelli system) on certain models, and then switched to the current Delphi-produced systems around 2002. I believe all the current HD models are fuel injected, no more carburetors.

Seamus,

Is clearly of Irish Descent............

Please let him do, whatever his heart desires...............

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Cheers Karel
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'Power is Nothing without Control..........'

Spoken like another of Irish decent. Know Deelys in PA.

I'm not at all sure I want to do this at all. Once my wallet allows, I'll spring for a Borla system with a Softronic flash, IPD plenum and an EVO intake. I think that would just about do it for me.

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'07 CS, Meteor Grey, stone grey, 19" Carrera Sport with meteor grey spokes/polished rim, headrest crests, bi-xenons, Bose, power seats, rain sensor, fire extinguisher, heated seats, dimming mirrors, FabSpeed Maxflo II catback
'06 CLS 500, white, beige
'04 Black Ranger Edge