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Error report: 2011-11-20 13:46:00

Status: Progress

Report generated: VemsTune (Help menu/Error reporting by one-click)

id like to ask a question in regards to the rpm signal/logging in vems. In this instance i have a flat spot in rev range between 5247 to 5500 roughly, when boost is at a high level and acceleration should be fast!! see log ending at 21.

however, when you see the log on one ending at 23, at the very beggining of the logging, rpms climb normal and fast, similar run with a bit more boost, and the amount of acceleration is much bigger here.

If there is NO problem with vems logging the rpm, or a delay when it is trying to save the log (rpm vs time) can this be only down to the incline of the road? say for example one run is uphill and the other run is downhill but with a very small incline?

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VasilisP 2011-11-25 00:55:40

http://www.vemssupport.com/forum/index.php/topic,853.msg18996.html#new

i have posted here the graphs of power from the logs from VEMS.

you can clearly see how the flat spot in 5200rpm makes the power curve fall,whereas on the second run it is nice and smooth

VasilisP 2011-11-25 00:47:42

the car during those runs did not seem flat in any point, and also if you put the information down on a power calculation excel, to calculate power from time and rpm, i can tell you that from the 2 runs i have at least 60whp and torque difference.

So there is definitely something wrong with the timings or timing vs rpm

how is it possible to have an rpm rise being flatter on the highest boost/torque area of the run? Clutch is NOT slipping and rated for far more torque than what the car produces.

Can this be wheel spin?

admin 2011-11-24 03:26:30

We cannot see any measuring problem in realtime data logging.

VasilisP 2011-11-23 00:56:16

had anyone had a chance to look into this as what the possible problem may be?

Version	0.40.0
Date	2011-09-29
Memory usage	61.3 MB
Running time	00:05:52

Operating system	Microsoft Windows XP Home Edition (5.1.2600)
Total physical memory	1015 MB
CPU	(1)
Screen resolutuon	1280x800

User	VasilisP
Created	2011-11-20 13:46:00
Added	2011-11-20 13:46:13
Comments	4
Attachments	0
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