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Discussion in 'Parallel Universe' started by Grits&Gravy, Nov 17, 2012.
Borrow a scale and a db meter and you'll be that much farther ahead I'd say.
It is not going to be a miracle reduction nor a miracle increase in HP, subtle difference. If you don't like it I will give you $300 for it
People talk shit but you are the one relying on your hand as a scale? How very scientific of you, it's obviously very well calibrated.
If you want some actual data, the original carbon LeoVince saved 2.2 kgs over stock, which is a reduction of over 40%. Now go and weigh yours to see if the One is really that much heavier.
Gotta say though, for me the much smaller size and better looks and sound would be enough!
On previous bikes with aftermarket exhaust, I've always noticed more/heavier backfiring with the insert removed. Especially on bikes that run lean already, an more "open" exhaust is not necessarily the best.
For example on my Ducati I had a very open custom exhaust... No insert and loud as hell. However when dynoing it, it hurt performance. I installed a baffle and performance improved. This is an extreme example with a crazy loud and open exhaust.
I think you will notice more backfiring with it reduced, but nothing extreme.
In case your didn't search........
I run mine with the baffle in, it's too loud and annoying to me otherwise.
I don't think you will pick up any extra power from running without an insert either, unless you alter the fuel injection map at the same time. It's already lean with the stock can.
I actually now have this.......
As I would agree with Lukas, imho, the LV one is obnoxious open......but the motor was breathing better, a bit better throttle response, and just a few mpg better open, I could not handle the tone. That is me...how ever, and is a biased thing. Several fellow riders like theirs open, and that is all great. As far as the motor goes. I think it ran better open.... But yet again, That is why I made my own pipe. I think the back pressure is created with the cat, and the headers. The natural flow through the pipe is in pulses, and there are many different ways to create the back pressure you speak of as goo for the engine. Usually the worst way to do this is by narrowing the exit.
I run with baffle in because of the noise.
I did a lot of experimenting with a 680cc single cylinder bike and a more open exhaust. No dyno, just a stretch of 7% grade marked off in increments. A carbed bike. I ran it with and without the air box lid, different jetting and a host of different length baffles.
It all made a difference where in the rpm range the power came on. Short story was, it made more power higher in the rpm range with an open exhaust, but it always came at the expense of low rpm power.
I think FI can negate some of that, by fine tuning the afr on the go, but I really question how rich a mixture the stock mapping can provide. I saw a 14.4 afr on a dyno with the stock can, but flow more air and the ratio should be higher. so I suspect the result will be similar.
Running with the baffle. no backfiring, but maybe a little more growl/pop on deceleration than stock.
I love the new sound....but without the baffle it would be a little loud for my taste, and I am trying to get along with the hikers, horsers and bikers in our forest as well...can't give them any more reason to try and keep us out...
I doubt there is any more power...for me this was about a little weight, a slimmer look, and a better sound...typical farkle therapy.