Slammed_Corsa
Member
Registered: 30th Oct 05
Location: Greenock, Inverclyde
User status: Offline
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Does anybody actually adjust this to what grade they are using. I am running super unleaded which is 98 ron but have not changed the plug on my 1.2 8v spi.
Will this effect the way in which the car runs?
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PaulW
Member
Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
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pointless running super on a 1.2 8v
octane plug only used if running low-octane fuel in the eu (92RON,. etc) if you runb 95+ then leaving it on 95 is fine...
if you run 95+ with the plug set to 92 then it will just fcuk it all up
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ed
Member
Registered: 10th Sep 03
User status: Offline
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The only thing the octane plugs let you run 4 star or unledaded. The engine has a knock sensor that thets it learn what octane level fuel you are running...
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Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
User status: Offline
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quote:
Originally posted by ed
The only thing the octane plugs let you run 4 star or unledaded. The engine has a knock sensor that thets it learn what octane level fuel you are running...
wrong, NZ/SZ engines have a RON plug instead of a knock sensor. Most 1.2/1.4 8v's came with the 91/95RON plug which can be reversed depending on what fuel you use. makes a difference if the RON plug is set to 95 and you use 95, not even sure you can still get 91 in the UK, can you? Vauxhall can supply a RON plug which is 95/98 if you want to take advantage of Optimax etc. wil advance the timing to suit the engine 
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Slammed_Corsa
Member
Registered: 30th Oct 05
Location: Greenock, Inverclyde
User status: Offline
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Cheers for the info guys
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