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Speed Linit in HP Tuners??

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Old Mar 26, 2008 | 12:26 PM
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Default Speed Linit in HP Tuners??

Is there a limit of the speed read out in HP Tuners? or perhaps a limit on how its read from the car like the pulses per second or how ever its measured.

The reason I ask, is I done a WOT run in 5th gear, got to 158mph @ 5400rpm, I carried on till 5900rpm before coming off the gas, but my speed still said 158mph.

Hopefully its just a read out problem, the only other thing is perhaps a slipping clutch, but it seems to be fine in all other areas.

Log file in in the link, couldn't attach as too large. 158mph@5400rpm is at 35950. Revs keeps on going after that point. http://www.solent-renegades.co.uk/im...twick_home.zip

Has anyone else seen some limit?

Last edited by RedWS6 00; Mar 26, 2008 at 12:57 PM.
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Old Mar 26, 2008 | 12:46 PM
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the pcm has a hardcoded limit of 255kph which is ~158mph.
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Old Mar 26, 2008 | 12:53 PM
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Originally Posted by foff667
the pcm has a hardcoded limit of 255kph which is ~158mph.
Thanks, that would explain it. Going by the RPM increase, looks like I got to 172mph, opps...

Last edited by RedWS6 00; Mar 31, 2008 at 08:37 AM.
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