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Old 03-20-2013, 02:25 PM   #1863
Scooby Specialist
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
2006 XTI Limited
OBP, Junior tuned 573WHP


Originally Posted by xluben View Post
Yep, Airboy is Excel and VD is a stand alone program. Both work well, but I think VD is far easier to use.

Definitely turn off fast polling if you're logging to make a power plot. Not only are there duplicate data points, but there are some that even go backwards! This creates big spikes that can skew the numbers.

Also, VD is set up to automatically trim to only 100% TPS. As long as you don't go WOT more than once in a single log, then it should show you the correct plot without any manipulation.
Interesting I did not know that about the less than 100%. I just assumed that you needed to trim that out so I always did. I use the Cobb AP V2b for logging and it's very easy with VD.

Originally Posted by Phatron View Post
^ there are differences in the plots if you take teh same log and plot it trimmed vs utrimmed. 25-50 ft*lbs difference at low rpm. at least on the log i just checked.
Are you saying you get different readings/ plots with and without the trimming of the less than 100% TPS on VD?

I have the full logs and the trimmed logs so I'll have to check that out!
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