Leo Vince X3 questions - O2 sensor and fit with FMF header?

Hope you guys cn help out

1. The X3 for the KLR is claimed to not need repacking - is this true with the WR as well? Haven't seen anything on this. The website only talks about the 50 hour repack.

2. I have read a couple posts suggesting that the X3 comes with a bung already installed for an O2 sensor. If so, is it the right size for an Auto Tune?

3. Can the X3 be mated to an FMF Power/mega bomb header?

Let's try not to get into the reasons for doing it just yet.....

Thanks

Spoke with a very helpful LV rep and answered most of the questions.

1. Repack lasts a very long time, but would technically require repacking somewhere after 80+ hours under normal use (not racing)

2. It comes with an o2 sensor receiver

3. Still not sure if the LV fits a megabomb. It fits the stock header, and the Q4 fits the stock header with an adapter.

It won't fit. I have the Leovince- the mufflerpipe cames over the headerpipe without a gasket. Stockheader od: 380mm- Powerbomb/Megabomb od: 430mm... I made a little pipe comes over the pb header in the leo mufflerpipe. But with the smaller diameter of this "adapter-pipe" decreases the power...

After 2000km (with stock header) the Leo vince gets very loud... A hard job to put new silencer-wool in, get thr old wool out...

The Leovince have a hole for the o2 sensor.