I installed the exhaust today.
First up, the stock exhaust weighed 8-8.5kg, my bigger scales aren't that accurate.
As you can see above the new exhaust is about 4.3kg, so the new exhaust saves about 4kg in weight.
Installing was a bit of a pain. First problem was something the akro guys are familiar with. The exhaust had an M18 thread in it but the Vstrom has a M12 oxygen sensor. I rang around for about an hour and no-one had seen or heard of a M18 to M12 O2 sensor adaptor. I ended up making my own. I had a M18x1.5 O2 sensor blank off bolt from a car exhaust I bought years ago. I got that bolt and drilled and tapped it for the M12x1.25 thread. That is an unusual thread, very fine, so I had to go and buy a new tap to do it ($29!).
Then once the O2 sensor was in the adapter it sat quite a long way out in the M18 bung in the exhaust. I ended up die grinding the M18 bung down internally so that the O2 sensor would actually see the hot gas flow
The new exhaust didn't come with any exhaust gaskets, the funny wire reinforced graphite type ones they used on the slips joints. So I had to use a screw driver and dig the old ones out. I ended up reusing them with some exhaust putty (maniseal) to help them still seal.
The next issue was that the front exhaust pipe couldn't slide far enough into the new exhaust to slot into the exhaust port. I ended up having to cut 15mm off the front stock header pipe to make it fit.
By the time I had it fitted I was pretty annoyed.
I started it with no insert, and it was quite loud. Too loud for me as I use the bike every day as a commuter. For a weekend play bike it might be ok, but I don't want to annoy the neighbours on a daily basis.
With the insert it's ok. The insert design gives it a slight leaky exhaust sound. It could be improved I think. Starting it and blipping the throttle it sounds more like a bike. Riding on cruising throttle it's relatively quiet (to the rider at least). When you open the throttle it does start to bark and make noise. Not a ducati sound, more like a Guzzi if anything. I am going to try to video it tomorrow to see what it sounds like from road side.
I wonder what it would sound like if it had it's optional catalytic converter in it. My friend has a bandit with a similar size carbon fiber pipe, with no insert but the stock catalytic convertor. It sounds a little quieter and better, totally different engine though.
I haven't put the IXIL sticker on yet, not entirely sure I will. Another thing I did is paint the rear muffler bracket satin black. I thought it looked silly the plain stainless steel colour as in the IXIL photos above. It looked out of place.
Powerwise, there is no extra power. With my modified stock exhaust I had a little hole in the midrange but a strong topend. Now the power is much more linear. I can't tell if the top end surge is less now, or it just feels less because the power is more linear.