I don't have any experience with the M3W or your style of V Twin engines but in the end all 4 strokes, Fuel injection systems and ECU's have similar fueling requirements.
If you are really struggling to find someone to do it for you on a Dyno, it can be tuned by road running.
The key is to install a Wide Band Lambda Sensor so you can read the Air / Fuel ratio and see at a glance whether its too lean.
It may be that the ECU you run already uses a Wide Band Sensor in which case you should be able to read it via the ECU data logging system.
Do you have the software and cables to be able to read and modify the ECU?
All my (limited) experience is with the 4cylinder Zetec engine with an OMEX ECU but the basic principles should be the same.
I'm not saying you will get the best possible tune this way (although an experienced road tuner will get very close) but at least it will run safely without the extensive damage an over lean mixture can cause.
As I said, I'm no expert, but if you're struggling this may be a route to explore and you'll learn a lot into the bargain.
Last edited by IvorMog; 18/05/18 12:25 PM.
