Looks like my problem is solved!

The mechanic has checked the TPS but that one seemed to be allright.
Even though the (iridium) spark plugs looked oke, we decided to replace them.
Yesterday i made a trip of 450 km, and the bike runs great!
No idea why thos sparkplugs were bad allready. I assume new in 2007 they didnt use iridum yet, so that was probably the 2nd set already.
Anyway iam happy that the bike runs great now after this simple fix.

The people i ride with here have supersport bikes, they like to go a little faster on the highway.
Above 120 km/h a little more wind protection would be more comfortable.
Are there windscreens that make a lot of difference on the MT01?

In the twisties its bye bye to the supersports