[help] Reading a dyno graph
Drifting
Joined: Jul 2001
Posts: 1,380
Likes: 0
From: Life is all about power and control
Re: [help] Reading a dyno graph (FNC80)
:lurk: You're not the only one to wonder why some dyno sheets seem to be suffering from Parkinson's disease. Perhaps there's some optional software to smooth out the graph that not all dyno owners have bought/use ?
Melting Slicks
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Re: [help] Reading a dyno graph (te51cle)
If you download the software from www,dynojet.com, you can see the effects of the smoothing function they have. It makes wiggly lines smoother. However, with software I am familiar with in my work, the use of this function can lead to misleading results! In other words, you can smooth out "real" problems making them look to be no problem. Now, no one would do that would they?
Thread Starter
Safety Car
Joined: Jun 2002
Posts: 4,386
Likes: 1
From: SoCal
St. Jude Donor '03-'04-'05
Re: [help] Reading a dyno graph (RWhite)
Does the "smoothing function software" mask engine problems? If those little dips and humps mean something, I'd want to see them there.
Melting Slicks
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Re: [help] Reading a dyno graph (FNC80)
I have only used the smoothing function to make the graph look a litttle "cleaner". I doubt the HP/TQ moves as much as some of the plots indicate (unless there is a real problem like a suck-out due to KR, etc.). The small wiggles may just be the machines inherent accuracy being displayed.
I know that you can take the smoothing out of some plots and actually pick up a little HP where the peaks were previously hiddened (smoothed)! Of course, that is dirty pool!
I am not an expert on the data that is displayed from the dyno, but I do know you can play tricks with just about any data and have any smoothness you want. I have seen this done many times over the years.
I know that you can take the smoothing out of some plots and actually pick up a little HP where the peaks were previously hiddened (smoothed)! Of course, that is dirty pool!
I am not an expert on the data that is displayed from the dyno, but I do know you can play tricks with just about any data and have any smoothness you want. I have seen this done many times over the years.
Thread Starter
Safety Car
Joined: Jun 2002
Posts: 4,386
Likes: 1
From: SoCal
St. Jude Donor '03-'04-'05
Re: [help] Reading a dyno graph (RWhite)
The small wiggles may just be the machines inherent accuracy being displayed.
I am not an expert on the data that is displayed from the dyno, but I do know you can play tricks with just about any data and have any smoothness you want. I have seen this done many times over the years.
:cheers:
Melting Slicks
Joined: Dec 2001
Posts: 2,040
Likes: 0
From: Collin County Texas
Re: [help] Reading a dyno graph (FNC80)
You may want to ask some of the tuners on specific questions of the data output. I am just guessing from my experience on data plotting software I have used here in the RF/microwave industry.
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