stock exhaust

[DMSTAINLESS]

Is there any mods that can be done to the stock exhaust to imoprove preformance and sound? I just ordered the cat eliminator, hoping that helps sound. But i really like the look of stock cans, and like to keep em.

[Chouch]

Yes.
A french guy, Pat, is doing that now.
He found a cheap stock pipes on ebay, emptyied them and filled them up with the usual material and 50mm tubes

[Chouch]

And couple more pictures :










Credit and pictures are from Pat, didnt ask him if I could post them, but I'm sure he'd be happy to share with US Hyper owners

The funny thing is that in France, the Hypermotard is declared on the paper for 97dB at 3750rpm, so those moded exhaust are probly road legal (at least for a noise test)

[Mr Mike]

This a simpler mod.
Got it from this forum.
Sorry cant remeber who

I also like the stock cans and plan to install cat removal header kit and mod the cans on my 796

[Chouch]

Originally Posted by Mr Mike

This a simpler mod.
Got it from this forum.
Sorry cant remeber who

I think it's HyperKromo who did that, on his Hypermotard turbo project.

[DMSTAINLESS]

Well i sure would like to hear what the new sound is, and what it does to performance. Any chance u could get in touch with him and get more details?

[AXE]

Sick50 and some others have done this mod. You will find several threads on this topic if you search. There are some with photos. You will get some performance gains and better sound, but really only after you lose the cat. Be prepared to have your ECU reprogrammed or buy a DP performance ECU to add the necessary fuel (FatDuc may work as well).

Out!

[Chouch]

Originally Posted by DMSTAINLESS

Well i sure would like to hear what the new sound is, and what it does to performance. Any chance u could get in touch with him and get more details?

Work is still in progress. So far I he did only 1 pipe.
I will post update here.

As for performance, really dont know.
I'm not even sure this would give anything more than noise. Maybe if you open the airbox and get more air intake it would be an interesting mod to do.

But as mentioned above, this requieres a DP ECU or, even better, a Nemesis.

[motodan]

I'd like to hear that pipe, looks nice.

[DMSTAINLESS]

I mean preformance wise, does it hurt low end by taking away back pressure? Ive done similar on smaller dirt bikes and such and got those results. I want better sound but not at a cost of the nice low end punch i love of my hyper.
thx man