Smooth Throttle for UpRev

V1H · 09-08-2014, 02:43 PM

Quote:

Originally Posted by wstar

[snip]
Background:

The stock throttle map uses lower values at the upper end of the pedal range when at lower RPMs. This doesn't let you get on full power in the lower part of the range, instead opening up a bit gradually as the RPMs rise. This is sometimes perceived as throttle "lag" at low RPM. UpRev tuners have figured out that you can "fix" this by putting a solid line of slightly-over-maximum values (3800) in the uppermost column of the data, and then trying to smooth that into the existing factory data a bit for drivability. The idea is to give you a similar-looking throttle curve in the useful parts at all RPMs, which reaches the maximum.
[snip]

Hi Wstar, hi all,
I was trying to reproduce your throttle map plots in order to also get a graphic representation of AWGD8's curves, and stumbled upon the following:
Can you explain why the "3800" is actually referred to as 3800 when in fact its corresponding hex value x8ED8 equates to decimal 36568? By calling it a "3800" we ignore an offset of 32768, or, exactly x8000. I find this value curious; it seems more deliberate than random. You got any insight or is that UpRev magics?
Also, in light of the ignored offset negative throttle map values are not really negative values anyway, and thus, their sign of no special meaning. If one had chosen another (arbitrary?) offset there might well be no negatives at all.
Cheers

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