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Stock Power Outputs


Romulus

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  • Member For: 19y 7m 5d
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  • Location: Perth, WA

What I dont understand is how you can have two identical vehicles with similar km running the SAME tunes and the SAME fuel, having vastly different power figures. Is it design? Quality Control? What gives us this difference?

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  • Member For: 20y 11m 3d
  • Location: Geelong Victoria
What I dont understand is how you can have two identical vehicles with similar km running the SAME tunes and the SAME fuel, having vastly different power figures. Is it design? Quality Control? What gives us this difference?

<{POST_SNAPBACK}>

I think the difference in power is purely down to factory boost pressures. The ones who make more always seem to have a little bit more boost than the lower powered ones. That would be caused by a variance in whatever controls the boost levels. Then there is mechanical variances between engines. There are always some engines that go that little bit better than others due to slightly different tolerances. Some engines may have slightly bigger bores, cams, bigger and smoother ports etc. They may be only thousands of an inch bigger but combine them all and you may get a few kw's difference between engines. Same goes for % of loss through the driveline.

Run procedure also comes into play.

Edited by Venom XR6
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  • Member For: 20y 9m 3d

We have seen a few 6 Speed Typhoons bring some big number stock, do you think that Ford have fudged the 270 kw output a bit to keep it under the GT?

From the results given and the times it would make you think that perhaps they are underated by atleast 10 - 15 flywheel kw.

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The thing is they are designed and produced to put out a set power figure at the fly as a minimum figure, and losses through the driveline will be slightly different for each car. If they brought out the cars with a tolerance of 240kw +/- then it wouldnt be the best way to advertise. If they bring it out as a minimum figure then it wouldnt matter what the actual figure is cos the customer will be happy anyway.

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