sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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quote:
Originally posted by Nic Barnes
quote:
Originally posted by sand-eel
You can run any car on any fuel as long as its mapped to suit, i'm sure I saw a 600bhp supra on crap US spec 92ron or something. Just don't have massively advanced ignition or compression and it will be fine.
us spec 92 ron isnt the same as what we would call 92 ron.
Never knew that just googled, their RON number can be 4-5 points lower than ours for some reason so their normal 91 ron will be 95ron here, ohwell.
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Iain M
Member
Registered: 18th Aug 05
Location: Wigan - Drives 272bhp corsa ZLET
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Tesco 99ron for me
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Griffiths1991
Member
Registered: 28th Jul 08
Location: Cheshire
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quote:
Originally posted by John
Unless it's been mapped for 95 ron, in which case it'll work fine.
People are finding it hard to understand this, its quite simple.
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richc
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Registered: 24th Mar 07
Location: Ilkeston
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Im sure its law (british standard) that all manufactured cars must run on the minium grade fuel in the country? Unless its mega mapped/modded to suit high octane, it will be fine, just might no be as efficient. But if your 40 miles away, it will cost you over £10 to fill up with higher octane so i would take the loss tbh 
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Nic Barnes
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Registered: 5th Apr 04
Location: nowhere near ginger people
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if its mapped on high octane and ran on normal a lot worse things could happen than efficiency lol
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Huwsi
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Registered: 27th Apr 07
Location: Bangor, Gwynedd
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Mine is standard and it seems to run 10X better on Vpower or any 99RON petrol
My car stutters like mad when running on cheap petty 
[Edited on 08-03-2010 by Huwsi]
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C4RL0
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Registered: 30th Sep 06
Location: Cumbria
User status: Offline
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Its not hard to understand.
Firstly, octane numbers have nothing to do with the amount of energy or power it makes. Its a measure of how much knock the fuel can withstand during combustion.
So the higher the octane number, the more ignition advance you can run. Hence increasing power. Don't expect to see anything worth shouting about though.
Most engines can compensate for this via the knock sensor, to a certain degree. But unless the engine is mapped for this specific rise in octane it's pretty much useless and not worth the extra pennies.
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drunkenfool
Member
Registered: 7th Feb 03
Location: Hereford Drives: Audi R8 V8
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I only ever use super unleaded but im running 500bho from a 2.66 litre engine
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Graham88
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Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
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V-power for me, manual says so
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Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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V-Power or T99 from Tesco, any high performance turbo charge car needs to be run on 99RON fuel.
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Mike GSi
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Registered: 3rd Jan 07
Location: Ipswich, Suffolk Drives:Astra VXR
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I always used Super/Vpower in my ZLET and CLET also my M3.
As Ojc says anything with forced induction ideally needs to be ran on 98+ Ron.
I Ran the M3 on Super simply because if you didnt the cheap 95 ron fuel would eat away at the Cylinder bore.
THis was BMW's fault for building the UK blocks with a softer materials.
U.S.A use the Iron Blocks so didnt have the same problem.
Also when supermarkets sold that dodgy batch of fuel a couple of years back, alot of BMW's suffered major problems.
99 Ron fuel doesnt only give the engine more power (Slightly) but more importantly it does protect the engine internally.
A friend of a friend blew up a ZLET because it was over fueling due to the AFM. Carbon deposits built up on the Cylinders there for increasing compression = Bang!
Turbo Engines do need more care than N/A Engines.
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John
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Registered: 30th Jun 03
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quote:
Originally posted by Ojc
any high performance turbo charge car needs to be run on 99RON fuel.
Unless it's mapped to run on 95.
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weddy1988
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Registered: 17th Sep 07
Location: Fife
User status: Offline
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if mapped to run 99/97 the 95 oct fuel will pre ignite before the spark due to the heat in the cylinder
more octance the harder it is to ignite under pressure/heat
so ignition before its proper time is trying to stop the piston coming up the bore witch is bad news
who in there right mind would map a car to get performance and run it on sh*t fuel tbh?
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whitter45
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Registered: 15th Nov 02
Location: Norton
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to be honest all maufacturers figures will state the use of 98 ron
They produce less power on 95 ron that is all
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
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quote:
Originally posted by Mike GSi[/i
I Ran the M3 on Super simply because if you didnt the cheap 95 ron fuel would eat away at the Cylinder bore.
THis was BMW's fault for building the UK blocks with a softer materials.
Never knew the 3L's had the nikosil bores 
The M3 evo is mapped to run on 98ron from the factory, with the nice "98RON only" sticker over the fuel gauge and inside the filler cap.
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ChrisBoom
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Registered: 6th Dec 06
Location: Highland
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Ah fuck it, ill stock up octane booster.
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Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
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quote:
Originally posted by John
quote:
Originally posted by Ojc
any high performance turbo charge car needs to be run on 99RON fuel.
Unless it's mapped to run on 95.
Why would you map it to 95 RON
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Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
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quote:
Originally posted by Graham88
quote:
Originally posted by John
quote:
Originally posted by Ojc
any high performance turbo charge car needs to be run on 99RON fuel.
Unless it's mapped to run on 95.
Why would you map it to 95 RON
Well with it being UK domestic motor and that 95 ron is standard over here uk spec cars no matter what are mapped to run this fuel.
E.g in Japan their standard fuel is higher octan so their cars are mapped accordingly. Hence why when jap cars come over here they are run on high octane and octane boosters.
Also sticking octane booster in a mapped Astra is a bit extreme, Super will be fine tbh
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Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
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I've never heard of a car being mapped to 95 ron, always 98 or more
[Edited on 08-03-2010 by Graham88]
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Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
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Not to mention all modern cars run knock sensors so filling with 95/98 really is irrellevant if you are worried about damaging your engine.
Its more for getting more miles/feeling quicker/placebo effect on standard cars
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ChrisBoom
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Registered: 6th Dec 06
Location: Highland
User status: Offline
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quote:
Originally posted by Fad
Also sticking octane booster in a mapped Astra is a bit extreme, Super will be fine tbh
Thats the point, I cant get super without doing an 80 mile round trip 
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.dean.
Member
Registered: 21st Sep 07
Location: Hindley, Wigan Drives: Like Its Stolen!
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quote:
Originally posted by Pete_vxl
I run v-power, my car runs better and gets better mpg than normal unleaded.
same here
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline
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Astra VXR was mapped on 98RON fuel as standard, Bluefin requires 99RON fuel.
Anyone running a Turbocharged car on 95RON is being cheap.
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John
Member
Registered: 30th Jun 03
User status: Offline
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Unless it's not been mapped for 99ron, I really don't see what's so difficult to grasp.
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DamoC
Member
Registered: 6th Oct 07
Location: Sawtry, Cambridgeshire
User status: Offline
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quote:
Originally posted by ChrisBoom
quote:
Originally posted by Fad
Also sticking octane booster in a mapped Astra is a bit extreme, Super will be fine tbh
Thats the point, I cant get super without doing an 80 mile round trip
fuck that !just buy big 45 gallon drums and get them deliverd to your house !
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