I have a 2013 F4RR which also sat for 4 years without moving.
It had a couple of minor oil leaks (which was not surprising) but other than that its been great.
It was at Buriram earlier this year, great track BTW.
As for the QS/blipper, mine never seemed to work, not very well at least so I updated the ECU with ECU studio and also purchased a new sensor from them. Since installed, no issues, works well.
Where in Thailand are you?
I'm from Chiang Rai (north)
Glad to hear that you got yours without major issues
where were the oil leaks ?
Did you also sent your ecu to ECU studio and which exact sensor did you purchase ?