Adam_B
Member
Registered: 13th Dec 00
Location: Lancashire
User status: Offline
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on a proper car i meant, not random jap crap with even more random engines 
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Ben J
Member
Registered: 31st Jan 05
Location: Cheshire
User status: Offline
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I was on V-power but am trying Tesco 99 again.
Had a Stage 2 Remap today too so i'll see how it goes on 99. May go back to V-Power tho.
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antnee
Member
Registered: 30th Dec 07
Location: Cov Drives: Clio 197
User status: Offline
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quote:
Originally posted by Ben G
used to use tesco 99 but now just use normal tesco unleaded.
exhaust didn't pop and bang as much when it was on 99 which is also the reason went back to normal unleaded
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Daniel_Corsa
Premium Member
Registered: 21st Apr 04
Location: Wigton, Cumbria
User status: Offline
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V Power only! Mainly for my shell points but car was mapped using V Power and used it ever since I got it!
April '06' Corsasport Feature Car  | Aug '08' Total Vauxhall Feature Car | Spring '09' Fast Car Feature Car
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Kurt
Member
Registered: 23rd Oct 05
Location: Hi
User status: Offline
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I chucked in some Texaco super the other night to see if there was any difference..
feels slightly more responsive when overtaking and i seemed to get and extra 1mpg 
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Ben G
Member
Registered: 12th Jan 07
Location: Essex
User status: Offline
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quote:
Originally posted by antnee
quote:
Originally posted by Ben G
used to use tesco 99 but now just use normal tesco unleaded.
exhaust didn't pop and bang as much when it was on 99 which is also the reason went back to normal unleaded
gotta get the pops in, the girls love it  
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CorsAsh
Member
Registered: 19th Apr 02
Location: Munich
User status: Offline
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quote:
Originally posted by Adam_B
on a proper car i meant, not random jap crap with even more random engines
Hush you with your jumped-up Lotus,
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Adam_B
Member
Registered: 13th Dec 00
Location: Lancashire
User status: Offline
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shouldnt that be jumped down? Who buys a vauxhall over a lotus, pah
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Gary
Premium Member
Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline
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quote:
Originally posted by Adam_B
Is it really going to make any noticable difference if your cars mapped on overpriced petrol or not?
Yes, big difference. If a engine is run on a higher octane fuel the ignition timing can be further advanced as it reduces knock.
If the timing is advanced the same amount on shit fuel the sensor will sence knock more often, thus retarding the ignition timing, which will cause a loss of power.
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DizzyRebel
Member
Registered: 2nd Jan 09
Location: Lincoln
User status: Offline
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tesco 99 is the best, not just because its the highest octane but because its actually the cleanest fuel and has the most consistent quality throughout the country - its not actually far off race fuel for quality so its worth putting in just for that reason.
Otherwise on a standard road car, if the petrl station was selling normal unleaded and branded it as V-power or super high octane shizznit no one using it would notice.
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Ben G
Member
Registered: 12th Jan 07
Location: Essex
User status: Offline
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i didn't really notice any differene between tesco 99 and 95 ron tbh.
the car was rolling roaded with a full tank of tesco 99 in at 253bhp, don't know if that's why it was such a high fly bhp?
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CorsAsh
Member
Registered: 19th Apr 02
Location: Munich
User status: Offline
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quote:
Originally posted by Adam_B
shouldnt that be jumped down? Who buys a vauxhall over a lotus, pah
Ok, your paradoxical little car 
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Daniel_Corsa
Premium Member
Registered: 21st Apr 04
Location: Wigton, Cumbria
User status: Offline
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quote:
Originally posted by DizzyRebel
tesco 99 is the best, not just because its the highest octane but because its actually the cleanest fuel.
I don't / won't use any supermarket fuel in any of my cars never have and never will!
April '06' Corsasport Feature Car | Aug '08' Total Vauxhall Feature Car | Spring '09' Fast Car Feature Car
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Ollie_B
Member
Registered: 1st Jun 08
Location: North Wales/Wirral
User status: Offline
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I know that my dad delivered exactly the same fuel as tesco use(99 octane), to the silverstone britcar race, so it must be good if race cars use it
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Mark Prydderch
Member
Registered: 7th Mar 07
Location: Chester
User status: Offline
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I use Tesco super unleaded, it makes me go faster round the twisties.
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DizzyRebel
Member
Registered: 2nd Jan 09
Location: Lincoln
User status: Offline
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quote:
Originally posted by Daniel_Corsa
quote:
Originally posted by DizzyRebel
tesco 99 is the best, not just because its the highest octane but because its actually the cleanest fuel.
I don't / won't use any supermarket fuel in any of my cars never have and never will!
Well when we started racing we got lab tests of different fuels from different manufacturers near various circuits around the country.
Tests concluded tesco 99 is the cleanest, the best and most consistant quality across the board.
Your prejudices are futile, supermarkets sell the cheapest fuel and now the best quality fuel, so why are you against buying from them?
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tom_simes
Show Staff
Organiser: South Wales
Premium Member
Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
User status: Offline
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quote:
Originally posted by Adam_B
Is it really going to make any noticable difference if your cars mapped on overpriced petrol or not?
My Dad's ex Police T5 didn't run properly at all on 95 RON, it had to be 97 or more.
The EML came on, and it stuttered quite badly at some points in the rev range too.
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sand-eel
Member
Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
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I use v-power really just to clean stuff up a bit, its only 10p more so who cares.
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DizzyRebel
Member
Registered: 2nd Jan 09
Location: Lincoln
User status: Offline
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10p more a litre to the average person is around £250 a year assuming you use £50 a week of it. im pretty sure that £250 could be spent on a much better performance enhancer such as manifold, cams, intake, remap etc.
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Gary
Premium Member
Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline
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no point in tuning an engine and running it on shit fuel
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DizzyRebel
Member
Registered: 2nd Jan 09
Location: Lincoln
User status: Offline
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normal 95 ron is sufficient for most cars unless they have been mapped otherwise. If it was that shit and bad for your engines then we would have very few high mileage engines out there. Super fuels are just a gimmick everyone knows that - tesco 99 being the only exception due to its quality, not its ron rating. I can never tell the difference between running 95 or super in a car, but i can tell the difference after fitting a tubular manifold or having it remapped...
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sand-eel
Member
Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
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Actually I just checked there v-power is 5p more than 95ron here so I would only save £80 a year.
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Gary
Premium Member
Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline
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why have a car mappen on shit fuel? You might as well bang some decent stuff in to get the most out of your engine
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DizzyRebel
Member
Registered: 2nd Jan 09
Location: Lincoln
User status: Offline
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Its not shit fuel though is it? theres nothing wrong with 95 ron fuel at all. Do you even understand ron etc? If youve your car re-mapped to remove the factory emissions dips etc, you will see very little extra gains from using super fuels. Esp as most super fuels have a varying quality so what might one week be 98 ron the next week could be 96 ron and so on...
Shells quality control isnt all that, some Vpower we tested was as low as 95ron as the QUALITY was not consistent. however tesco fuels had consistent quality and this makes it a more worthy purchase as your actually getting what it says on the tin so if you had your engine mapped for a particular fuel theres more chance if it was mapped on tesco 99 you will fill it up again with the same quality fuel you used on the mapping session.
[Edited on 26-03-2009 by DizzyRebel]
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Gary
Premium Member
Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline
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that what i said. might as well use 99 for the bit extra wether it be slight or not, every little helps
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