Fuel!
Author
Discussion

Wollemi

Original Poster:

340 posts

162 months

Friday 9th March 2018
quotequote all

I always use super, nearly always Shell V-Power, in my 987.2 Boxster S. Now I don’t want to start yet another discussion of whether this is a good thing or not.
I understand that if I use normal (95) fuel then the engine management will adjust so that the car runs fine with no problems
What I want to know is does the engine management automatically readjust when I go back to using super unleaded?
Years ago, when I had Subarus they had to go to the dealer to have the ECU reset once normal fuel had been used.
Is the Porsche engine management more sophisticated- will it sort itself out or will it have to be reset?
Will simply disconnecting to battery be enough to reset it?
Thanks

Paynewright

659 posts

107 months

Friday 9th March 2018
quotequote all
Have you checked the handbook?

smudger911

516 posts

288 months

Friday 9th March 2018
quotequote all
ECU will work out the fuel octane rating and advance / retard the ignition accordingly.
Just drive it!

jkh112

23,947 posts

188 months

Friday 9th March 2018
quotequote all
My understanding is that it will take while for the car to readjust to the higher octane fuel, but it does do it itself.