Can anyone think of a reason why...

[Cher]

...I shouldn't take a die grinder and remove the internals of a stock muffler on a 999?  It's a perfectly good muffler, naturally, but it weighs about 500 pounds and sits roughly even with your shoulders when seated on the bike.

So:  Die grinder removal of essentially everything inside the aluminum canister, then re-weld it!  Viola, super light, riduculously loud superbike.

Yea.

But would I need a Power Commander since the flow through the exhaust system would be greater?

Inquiring minds want to know 

[muskrat]

can I bring my lawn chair and beer to watch?

[Samsonite]

Inquiring minds want to know 

Believe in what the Nike God's tell us........

[shadowcougar1]

Hmmm.... let me know if it works.  [moto]

[fastwin]

The 999's suck at the exhaust. Why is it that all Ducati's sound awesome, except the 999s? Especially the two valve air cooled bikes. Awesome exhaust sound. Tamburinis also rock, as do the newer 1098/1198 bikes. Something about the under seat twin mufflers. The 999 under-seat muffler box just sucks. I wasted my money on a standard 999 with a full Termi exhaust when I could have upgraded to a 999S with full Ohlins!!!! Always go for the top of the line suspension over a dumb-ass, over priced exhaust upgrade. You'd think I was old and smart enough to figure that out. Apparently not.

[svoloch]

There are multiple threads on ducati.ms and ducatisti about coring the exhaust and what to repack with.  I've not seen much about leaving it empty, but I imagine you would be better off repacking it with something super light with some fiberglass on top to keep the already toasty factory pillion warmer from actually toasting your cheeks a golden brown ( please pardon the cheek reference, and rest assured I edited it down from my normal svolochness ).

Search for "coring 999 exhaust" or "cored 999 exhaust".  The articles don't reference any issues with change to backflow on the stock ecu, but one guy said the flat spot around 4k rpm widened bit and he "had it tuned out".

As usual, let me know if you need a guinnea pig

-svoloch 

[♣ McKraut ♣]

i've wondered why you and patrick have kept them uncored for so long actually...  i don't know what you're waiting for   

[junior varsity]

not sure you'd need a power commander with out changing the air into the motor also. i know lots of times folks need to richen up the mixture when the airbox is opened up AND the exhaust is opened up or it will run to lean...and coming from that, also run hotter. So they'd richen it up to avoid damage and keep the motor a little cooler.

[♣ McKraut ♣]

not sure you'd need a power commander with out changing the air into the motor also. i know lots of times folks need to richen up the mixture when the airbox is opened up AND the exhaust is opened up or it will run to lean...and coming from that, also run hotter. So they'd richen it up to avoid damage and keep the motor a little cooler.

i don't know...my recent experience with an arrow system resulted in massive popping conditions with the airbox still totally stock...stock filter.

[junior varsity]

Yeah the popping is often one of two things:
1. Running slightly lean
2. Leak in the exhaust

(Mine came from the latter. The DP reverse megaphones I have/had on the bike never have made a perfect seal).

[♣ McKraut ♣]

oh it was both.... it runs SUPER lean, as in i'll even get a pop or two on hard decel with complete STOCK exhaust (it's muffled but i can hear/feel them).  and the arrows leaked on the slip fits to the header pipes.

[junior varsity]

that's where my leak occurs, even with new sil spaghetti headers. I thought it might take care of it, but the fit of the dp conti replicas is just loose. i did just recently pick up a set of sil/ncr titanium pipes and the fit seems to be tighter. we'll see once i get the rearsets on and everything bolted together. (new pipes are still low and need the rearsets as the brackets)

[Cher]

Very cool, info.  Thanks for the replies; most lead me to believe that this chop/cut/rebuild SHOULD take place.  I mean why not?  What's the worst that can happen?  A totally ruined Ducati motor?  Phhh-t.  I ain't skeer'd...

[junior varsity]

Totally ruined? You mean "opportunity" for fancy motor work.

[Cher]

   Exxx-cellent, Smithers, I like the way you think...