I brought my 2015 Vantage GT out of hibernation yesterday. I went through the long term storage start up process. Gas to the floor crank engine until engine light goes out. All good.
After when I normally started car engine shot to 4000 rpm and then backed down 1300 rpm instantly. Just wondering if anyone else has experienced this.

 

As long as the RPM dropped back down right away I wouldn't be to concerned, any lights on DIM?

 

Nope all good
THX

 

I just recently changed oil and left the oil drip for several hours before I finished and refilled.

I did the same 'press the accelerator' exercise but did not experience the 4000 rpm jump.

Perhaps try it again and see if it reoccurs... maybe hook up a foxwell and check codes...