Menu toggle

fuel

Yes, I think it was the E85 and some other blends, the link below is a new one I found. It seems that blending ethanol can significantly reduce the calorific value of the fuel, so what you gain in higher efficiency, you lose in actual energy content in the fuel. [link=http://www.greencarcongress.com/2009/05/mahle-bp-blends-20090501.html]http://www.greencarcongress.com/2009/05/mahle-bp-blends-20090501.html[/link]
 
ORIGINAL: robfield Hi, I read all the replies, I know mines a bit late, but I don't think anyone mentioned the RON adjustment screw on the ECU. Porsche built their engines capable of running in extreme conditions around the world where fuel quality may vary. The standard map is very conservative, thats why chips are so good on these cars. Now, I don't know generally what setting the cars left UK dealerships with but I know this screw exists as I have set mine to max i.e. top RON available. This is easy to check and perform. Now I only use Super. I filled up with 100RON in Adenau. Max to min equated to 8hp on my car. (I doubt if they are set at min for UK but I wanted to see what difference it made) If anyone still looks at this thread & wants to know how to get to it I can leave instructions.
Click to expand...
Are you sure that affects the ignition timing?
 
It does indeed change both the mixture and the timing. http://motronic.ws/ Select FQS - fuel quality switch from the menu on the left. What is noticeable, it that the switch position does not run from full lean to full rich, so if you have wound it to position 7, you may be running leaner than standard but with retarded ignition !
 
I dreamt of owning a 911 for forty+ years and was recently in a position to realise that dream (early retirement etc.). It is an indulgence, but unlike most indulgencies, probably won't loose me a shed load of money if looked after. I love the car to bits - it's abilities and quality never cease to amaze me. One thing you will NEVER catch me doing is filling it with supermarket fuel of any grade. With the miles most of us drive in these cars, a couple of pence per litre will make very little difference to the annual running cost in comparison to other expences. Remould tyres anyone??
 
Remould tyres are an inferior product. Normal and super are of the same quality but with different specifications. It could be more significant where you buy your fuel. A garage that sells little super unleaded, could have fuel thats sat in the tank for a long time, collecting moisture and losing some of the more volatile components in the mixture. A supermarket can be a really good place to fill as its often cheaper, and you get a lot more turnover of fuel in the tank. The fuel quality is as much guaranteed here as in most other garages. After all that [:D], I do fill with super, and not at a supermarket (as ours does not do super), but the garage I go to does have a lot of people filling with super.
 
ORIGINAL: robfield Hi, I read all the replies, I know mines a bit late, but I don't think anyone mentioned the RON adjustment screw on the ECU. Porsche built their engines capable of running in extreme conditions around the world where fuel quality may vary. The standard map is very conservative, thats why chips are so good on these cars. Now, I don't know generally what setting the cars left UK dealerships with but I know this screw exists as I have set mine to max i.e. top RON available. This is easy to check and perform. Now I only use Super. I filled up with 100RON in Adenau. Max to min equated to 8hp on my car. (I doubt if they are set at min for UK but I wanted to see what difference it made) If anyone still looks at this thread & wants to know how to get to it I can leave instructions.
Click to expand...
Hi Rob please leave me instructions Bob
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top