Interest in a Y-pipe for the R12GS?

[rdcyclist]

First of all, an introduction is in order: I'm a long time rider in California who recently purchased an R12GS. I've been riding sportbikes and sporttouring bikes for over 30 years. Like many here, the R12 has taken over the stable and the FJR, VFR, and ZX are on the block. I mean why have 5 bikes when two can do most of the heavy lifting?

Naturally I cannot leave well enough alone so I wanted to see about opening up the GS a bit. Here is what I've posted on ADVrider:

A friend of mine is an ace fabricator who does all of the prototyping for a local bike hop up shop. He rides a 1150GS and during the MotoGP last weekend we got to talking about building a Y-pipe for the 12GS. The idea would be to use the stock headpipes up to the junction for the Cat. Cut the Cat off and use pipe unions to join our Y-pipe to the headpipes.

The Y-pipe would be set up to mate up with the stock muffler or the slip-on of your choice. We could even make a pipe to run a low exhaust if you wanted to run a full size left bag.

Naturally this would cost much less than the Remus or Akra full systems and avoid the problems with the location of the O2 sensor those systems have with engine guards. Any interest here?

I could ship these pretty much anywhere. I imagine it would cost 50 bucks to mail one to the UK.

 

[Mouse]

I'd be interested in this product, depending on the final price of course. But I'm worried that ditching the cat would alter the pressure in the exhaust and thus make the engine run lean.

The cost savings of buying a Y piece over a full system would be lost if you then have to spend hundreds on "power commander" chips or similar to correct the mixture.

Any opinions, or even better hard facts?