not trying to start any arguments! im going to fill my tank with premium from now on, but just doing some research and posting some findings.
Re: High Octane Fuel Necessary or Beneficial for Swift Sport
by Evoman » Wed Aug 22, 2012 9:30 am
Hi
I was pondering the same question a while back and heard various responses one of which alluded to any such gains in power being negligible in a 'relatively' low horsepower car. However, having rented one of the Swift Sports at Rent4Ring (and these guys know their stuff when it comes to these little firecrackers), they know from the data downloads and performance mapping, the SSS will retard the ignition with regular unleaded to the point where bhp will drop to approx. 105bhp versus the 125bhp with higher RON fuel (98/99).
This was interesting to hear because as much as you hear people say it's only psychological that you get more performance, particularly from a small engined car, I certainly felt a difference with higher octane fuel, a surprising difference at that. Having been told by the guys at Rent4Ring who are a brilliant outfit for Nordscheilfe track prepared cars, I now know there is truth in the improved performance of the SSS on higher RON fuel.
That said, our SSS does'nt get treated to the expensive stuff all the time. If you are tootling along on a steady commute or shopping runs without extending the legs so to speak, no issue with standard RON fuel being in there. This again was words from the Retn4Ring guys. However, if you are letting the engine 'sing' in the upper echelons, get that high RON fuel in there and feel the difference!
Cheers
Evoman
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Joined: Wed Aug 22, 2012 9:19 am
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