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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Tuning day
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Wed, 28 May 2003 06:17
 
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Every test I've seen where a "higher-octane" fuel is put in place of a lower one a big swag of power has been lost, not gained, the density had a much lesser impact. Problem with what you are saying is that maximum power is not made under closed loop, so that argument doesn't make sense. I was under the assumption they were aiming for stoichiometric AF ratios and highly advanced ignition under closed loop, but thats as outlined above, different to maximum power.
I understand the closed loop explanation perfectly, and that of engine noise, but you basically re-wrote what you said in the first place. If the engineers put it in the ignition tables accounting for the lowest common denominator, then why would they bother to claim their max power is only produced at a higher octane level? In that case their max power would only be the same as that on the lower octane.
I think what you're getting is that they're not using knock sensors to determine the octane rating, but in that case what is going on? You still haven't explained the question, you just wrote in more words what you originally said.
I'm not having a go dude, its just I'm no clearer as to how they're doing it than I was in the first palce 
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