9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHFuel & ECU
Leading reported evidence
Disconnect battery
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
If you want a quick change disconnect the battery for 10 mins, this'll force a 'relearn'.
Leading evidence: 'Disconnect battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect battery' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
My manual says run on 98, but the dealer (non-OPC) but experienced seller says "just stick unleaded 95 in it - you won't notice the difference" I know the ECU will adapt using anti-knock technology, but whats the views??
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I run V-Power or 97 Super, if I'm forced to use 95 octane I only go for a BP/Esso/Total et al.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I run V-Power or 97 Super, if I'm forced to use 95 octane I only go for a BP/Esso/Total et al.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
My manual says run on 98, but the dealer (non-OPC) but experienced seller says "just stick unleaded 95 in it - you won't notice the difference" I know the ECU will adapt using anti-knock technology, but whats the views??
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
My manual says run on 98, but the dealer (non-OPC) but experienced seller says "just stick unleaded 95 in it - you won't notice the difference" I know the ECU will adapt using anti-knock technology, but whats the views??
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
My manual says run on 98, but the dealer (non-OPC) but experienced seller says "just stick unleaded 95 in it - you won't notice the difference" I know the ECU will adapt using anti-knock technology, but whats the views??
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
This thread has prob been done 100 times, apologies for that - but I wanted to ask the experienced owners.... what grade of Petrol you use. My manual says run on 98, but the dealer (non-OPC) but experienced seller says "just stick unleaded 95 in it - you won't notice the difference" I know the ECU will adapt using anti-knock technology, but whats the views?? If I run on V-Power (for example) will I notice sharper response or it just not noticeable?
Also, I was reading about the ECU needing to "learn" if a mod is made to induction or exhaust and perhaps using different fuel?? Meaning that the ECU takes time to adapt over some miles before it optimises settings for the particular adjustments? Can anyone verify this or is it BS!!!
Thanks....
Migration info. Legacy thread was 126677
The ECU 'crap' is true! It's adaptive! If you want a quick change disconnect the battery for 10 mins, this'll force a 'relearn'.
I run V-Power or 97 Super, if I'm forced to use 95 octane I only go for a BP/Esso/Total et al.
You will notice the difference, the car runs better, you get better MPG and your smile lasts longer!
Damian
Migration info. Legacy thread was 126705
V-Power whenever possible.
BP Ultimate otherwise.
On high compression ratio engines, the fuel quality makes a BIG difference!
Migration info. Legacy thread was 126719
V-power or BP but V-power if at all possible.
You know from the recent problems not to use supermarket fuel.
V-power gives better power and therefore better mpg which offsets the cost difference and the detergents keep the valves clean.
102 octane is being produced and sold in some places so that you can get more power at track days.
Why would you take the opinion of a second hand car salesman over the Porsche research and development engineer who wrote that section of the manual?
Migration info. Legacy thread was 126720
Cheers Guys.... message is very clear on the fuel ... kinda thought as much from the manual and in fact I have been using V-Power anyway... (used to that from my EVO) but just wanted make sure!!!
Migration info. Legacy thread was 127327
I'm going to jump on this thread. This literally sounds like rocket science to me. Should I be using higher octane fuel in my new 997? I have never used anything other than 95. Are you saying that whilst 97 is more expensive per litre it will cost me less per mile than 95?
Migration info. Legacy thread was 127334
Jamie - you are buying a £75K car! :wink:
Doing the sums: if you do 10K miles a year, Vpower will only cost you £100 a year more. That's assuming no difference in fuel economy. Not really a lot when you think about it, and the car runs so much sweeter on the good stuff and it is much better for the engine.
A real no-brainer if you ask me.
Migration info. Legacy thread was 127341
This is a source reference. Confirm exact model applicability in the original material.
