When banking a corner on the bike, it starts to stutter as if starved of fuel and then once upright it runs fine , loads of fuel , any ideas mike

could be a blocked filter or blocked main jet/s
water or dirt will cause quick problems

Could be fuel pump pickup has come loose or ????

um u may be right with starving for fuel thts wat it may seem like but it culd be your spark loosing power due to lack of power id replace ur spark plug

check air filter, might be plugged, [dirty so engine is starving for air.] check fuel lines & filters, dirt blockage need replaceing, check for fuel leaks in lines etc, uses fuel & then sucks air causing it to stop, listen to see if fuel pump is running properly & not stuttering could be short in it's wiring

code p 0457 refers to the EVAP system--leak detected
code p 0340 refers to cam shaft position sensor A bank 1--circuit malfunction == causes --wiring ---CMP sensor ---ECM
at this point I would be checking the Cam shaft position sensor and wiring as it could be failing at rpm's and causing the problem

Don't do a bank robbery with this car.

Bad stick coil

Hello,
Sounds like the fuel pump is getting too hot and then it's causing vapour lock, therefor starving the engine. After the bike shuts off the fuel pump cools down it's allowing the fuel to flow once again. On my 2000 V11 Sport I solved this by shielding the fuel pump with an insulated foil wrap from a car parts store. Now the fuel pump stays cooler and I never had vapour lock again. Of course if your fuel pump is located in the gas tank then my suggestion will not help. Hope this helps.

when you cleaned the carb, did you remove the jets? Sounds to me like the high speed jet is plugged

Starving for fuel - may be a blocked fuel filter