Fuel Markets A B C

[mphoile]

After checking the option codes on the hood sticker I have a code I do not understand and cannot find any information about. It seems there are three “fuel markets” according to Porsche. I know countries have different standards/qualities of petrol so there may be a need to have different specifications to work with each countries fuel.

Can anyone advise what the physical differences are for each market ( A,B & C) or it simply a different inspection/service interval/service plan?

Thank you.

[Solamar]

Just a guess, but on the Carreras with Motronic injection, there is a fuel quality selector on the back of the DME that is factory preset based on delivery destination. I believe it adjusts engine timing.

[87maniac]

Yes, Search DME settings, Wong's site i believe has this info.
there is a rotary switch that you can adjust for different fuels.
This could be used to alter timing (+mixture?) with a simple setting.

the Brown Wire under the drivers seat will also alter timing for CA emissions.