A question of power
08-19-2003, 01:15 AM
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A question of power
here's a question:-
Why do the earlier cars require 98ron while the later 95ron?
Did Honda make changes to the engine to allow the car to produce the same power using 95 ron as when using 98ron
Are in fact the older cars more powerful
Surely to enable the car to no need 98ron would mean they were detuned? No?
Why do the earlier cars require 98ron while the later 95ron?
Did Honda make changes to the engine to allow the car to produce the same power using 95 ron as when using 98ron
Are in fact the older cars more powerful
Surely to enable the car to no need 98ron would mean they were detuned? No?
08-19-2003, 01:20 AM
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Are you sure? My car is an 03 and it specifies in the fuel filler bit 98RON. It only drinks 97RON and Optimax because there is no 98. IIRC the manual also says 98RON.
08-19-2003, 01:45 AM
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No,
I believe the later cars could run on 95, but were recomended to be run on 98. The pre 02 cars should not be run on anything less than 98. All in the tech faq
I believe the later cars could run on 95, but were recomended to be run on 98. The pre 02 cars should not be run on anything less than 98. All in the tech faq
08-19-2003, 02:10 AM
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The inside of my fuel filler cap ( 02 car ) says 95-98 ron, the 98 is in larger type so I presume that is the preference, but obviously 95 is o.k. Round here I have difficulty getting s.u.p. or optimax so most of the time it has to be 95.
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08-19-2003, 03:42 AM
#8
They're all only going to give there best when running on 98+
The ECU isn't intelligent really. All it does is retard the timing a lot after in senses knock with the knock sensor. Then it'll gradually bring it back, until it gets back to the base maps, or gets knock again. So if you run low octane fuel, the ECU will compensate, but only after it's heard the knock. And it doesn't really do so in an 'intelligent' manner. Not a good idea to run an S2000 on low octane fuel for any length of time. If you're going overseas and not sure, take some octane booster.
-Brian.
The ECU isn't intelligent really. All it does is retard the timing a lot after in senses knock with the knock sensor. Then it'll gradually bring it back, until it gets back to the base maps, or gets knock again. So if you run low octane fuel, the ECU will compensate, but only after it's heard the knock. And it doesn't really do so in an 'intelligent' manner. Not a good idea to run an S2000 on low octane fuel for any length of time. If you're going overseas and not sure, take some octane booster.
-Brian.
