Well, the first dyno didn't go very well, horsepower dropped by 7hp and torque by 5nm over the entire rev range.
We stated that we need to set the timing of the exhaust cams to the original numbers and try again.
On Sunday, I adjusted the exhaust camshafts to the original numbers and did some test drives,
the 3rd cylinder plug broke during the first test and the 2nd cylinder plug broke during the second test.
The third test went very well, although the air was so cold that I didn't feel like going far for a ride when it was 2 degrees Celsius warm.
I ordered new plugs and the dyno will be back in a week.
I just started to wonder if the old plugs had any effect on the first dyno pull when the result was so bad.
So I can't say anything specific about the test drive yet, I need to get more miles under it.