Modern Vespa

Hello everyone,
I have been searching the forum quite a bit but could not find the answer to my problem.
I got a 2019 BV350 of the auctions as a repairable write write off project.
Looked pretty good on the photos and I think I got a b it carried away during the auction.
To cut a long story short. The bike starts fine. First crank every time but when applying throttle it boggs down. No real acceleration.
It appears it doesn't get enough fuel.
1. replaced the old fuel with new fuel and left the tank cap off for ventilation
2. replaced the fuel filter with another one from another vespa.
3. replaced the fuel pump with another one
4. Taken the injector out and cleaned it with carbie cleaner and comp air.
5. Tested the injector as far as I could. spray pattern seams ok
6. taken the air filter out...
7. changed the spark plug
8. Got an OBD2 cable.
- no fault codes
- Throttle lever angle is showing and seams ok
- Air intake temp seams a bit high with 42 degrees
- Intake pressure fluctuates between 11 and 14 PSI
- O2 sensor ranges between 0 and 850mV

nothing helped so far.

Any other ideas would be much appreciated..\

Thanks

Did you install a clean air filter?

No just took it out to see if it would make any difference. It didn't and the one that was installed actually looked fine.

I can't speak for this machine personally, but many scoots will not run well if the air filter is not installed.

How many miles? Could it be the drive belt?

Its got around 30000km. How can it be the drive belt? The engine is not accelerating / reving up properly. The bike is on the ctr stand and the back wheel is turning.
Thanks

Have you tried turning off the ASR (I'm assuming it has it)?

you are a legend..

ABS Light and ASR Light were flashing and I thought that was unrelated. Never had a bike with either or.

I did not manage to "switch" the ASR off but with pulling the ABS fuse the problem went away.
At least I know now the motor and ecu is ok. Will have to put all the plastics back on now and take it for a spin to see what it does.

Thanks for now and I might come back with questions on the ASR/ABS system