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Dominic Kelly
Tinkerer
QLD
JZZ30 Soarer GT-TL

Posts: 85
Reg: 07-2005

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Tuesday, October 31, 2006 - 12:20 am, by:  Dominic Kelly (Drk_awd)

You can be as sceptical as you wish David that's up to you.

As for marginal differences in road slope and smoothness - don't you think people have favourite stretches of road they use all the time? For example the same hill I drive up every day on my way to work? Unless there has been a recent seismic event I don't think slope or smoothness come into it.

Throttle position? I have a Motec which just happens to be able to log that parameter (as well a manifold pressure) and I'm surprisingly quite consistent when travelling over familiar roads. From those logs I can also get a good idea from the slope of the rpm vs time data whether the car is in fact accelerating faster.

Sex? Well the fact you scored one for the first time in a couple of months might affect your driving but don't assume that's the case with the rest of us.

As for the octane rating an Autospeed article quoted a senior BP fuel chemist thus "Keep in mind that typical variation in BP Ultimate is 98 – 100 RON while normal unleaded ranges between 91 – 93 RON." So you can scratch that off your list as of approximately 12.15am, Tuesday 31 October. Sorry you had to wait so long.

Besides this, since when do we need to seek your approval for any of our opinions? Tell you what why don't you pay for an engine to be tested on an engine dyno and I'll supply the different fuels. Nice controlled environment and we should be able to vary the loads quite nicely. Double blind tests, random sequence the lot.

Not interested? No, didn't think so and mostly because of what it would cost. Given such a situation most of us rely on other less scientific but possibly still valid methods. No one here is making claims that they think fuel A has made an x% increase in the power at the wheels based on their drive down to the local Maccas.

Most drivers who are familiar with the way their car performs can usually notice when the car is running better eg. crisper throttle response and smoother running. If it happened after changing fuels and remains so consistently for a period of time and after eliminating other obvious factors such as a change in seasons or driving patterns then it is reasonable to assume that the fuel may have played a part in that.

Then again some drivers don't even notice they're driving with a flat tyre. In your case you'd probably want proof that the pressure in the tyre is in fact 0 psi before believing it. And only if the pressure gauge had been recently calibrated at a certified testing laboratory.

Sorry if I sound cranky but your smugness and patronising attitude are starting to piss me off. I understand that scientific methods are important but due to practicality and cost you often have to rely on your own senses and observations while trying to stay as objective as possible. Not easy of course but just don't assume we're all deluded fools because we try.

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