r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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Is there anything i can do to get better performance out of my corsa or get a spotier sound for free??
(Cheap-scate)
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Git
Member
Registered: 3rd Apr 03
Location: Swansea
User status: Offline
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Remove the airbox
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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Loose some weight from the car.
Only drive it on cold days or down hills.
[Edited on 03-08-2003 by MikeH]
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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What are you implying MikeH??? lol
Better not remove the airbox eh?
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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What i mean is, are there any little knobs or switches i can fiddle with to sap a wee bit more power--- oh and i've drilled the airbox, nice sound but my friends BFO cone sounds better!
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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ditch rear seats spare wheel all interior trim any thing you dont need carpet mirrors
er
dash
i cud go on and on
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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don't fancy ditching the spare and it's a 5door so rear seats need to be kept i think. No little engine tweaks or anything??
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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r8cr: i might be wrong but i could swear my car runs quicker when i put 97 ron unleaded in it instead of the recomended 95 ron.
You could check to see if there is much slack in your throttle cable i suppose! If there was a lot it might not be opening the butterfly valve fully.
Oh, inflate your tyres to the correct pressure as well, that'll help.
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Git
Member
Registered: 3rd Apr 03
Location: Swansea
User status: Offline
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Ive been treating my car to the old Shell Optimax, nice 
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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Cheers mate! I suppose a higher octane fuel will help eh! It'll be super unleaded the next time then eh!
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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yeah but its wasted unless you have the correct fuel ron plug on the engine
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Git
Member
Registered: 3rd Apr 03
Location: Swansea
User status: Offline
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Next question:
How would we find this out? 
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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do you have to reset the ecu when yuo change the ron plug to a higher number??
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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Adam-D: So if you change the plug, do you get a performance gain on 97ron?
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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yes caus the ecu will readjust for optimum performance/economy for that fuel rating
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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But does higher ron mean a more combustable fuel?
I was under the impression that higher ron meant it could handle higher compression without self igniting. So it is generally used for performance cars with a higher engine pressure ratio.
So in theory if it is used in a corsa 1.2 there should be no difference.
BUT
Mine does seem to run better with it even with the 95 plug in it. (actually maybe the wrong plug is the reason?)
"yes caus the ecu will readjust for optimum performance/economy for that fuel rating"
..... it adjusts with the pre-conception that the fuel is 95 ron, it can't detect the fuel (hence the plug).
so..... if you put the correct plug in then the car will know it can increase compression without the knock sensor being triggered....
I think i have just answered my own question.....
Where can i get the 97 ron plug from and how much is it?
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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you just unclip the one that's there now and flip it over m8
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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oooohhh, have to get my haynes manual out and find it now 
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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look under the bonnet between the air filter and the windscreen and will see a black thing on the end of a tube which will say 95 or 97 on it in white (ron) when you unclip it you may even find a 98 on a third side depending on the engine!
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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pice of piss prob is on mine the numbers have worn off
vaux sell em for bout a £5er
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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how old is yours like??? Mine is a 1994!
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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Actually, is it only the sohc (8v) models that have a plug?
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r8cr
Member
Registered: 2nd Aug 03
Location: Blairgowrie
User status: Offline
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yes i think you're right. I think the others are controlled automatically by the ecu
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Gambit
Member
Registered: 5th Jun 00
Location: Common Sense HQ
User status: Offline
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ecotec's have a knock sensor instead of the switch
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MikeH
Member
Registered: 3rd Apr 03
User status: Offline
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So without having my ECU chipped I am simply wasting my money on the more expensive 97 ron fuel?
Guess i'll stick with 95 then.
The smoother sound from the engine must be all in my head.
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