Software Dyno...

[Gary Uebel]

Mike has a web site available for downloading his software...unfortunately I 
don't remember the address right now.

I was think of writing my own program to do the same thing, except get the 
RPM's from the cars computer, if possible.

My question is, can I get RPM readings from the data port?  How about trip 
odometer reading?  What does the signal look like coming from the data port? 
  Any suggestions on how to get the neccessary info from the car would be 
appreciated.

Thanks.

gaza93


>From: Daniel Ciobota <dciobota at hiwaay.net>
>Reply-To: gmecm at efi332.eng.ohio-state.edu
>To: gmecm at efi332.eng.ohio-state.edu
>Subject: Software Dyno...
>Date: Mon, 09 Aug 1999 17:40:16 -0500
>
>Dave,
>
>I noticed you said you tried to use some of those "sound card" based
>software dynos, and they didn't work well for you.  I used to own a 5sp
>5.0L mustang, and I downloaded Mike Glover's dyno software and used his
>schematic to make an rca connector that fed from one of the coil
>primaries.  I think I saved the software and schematic, but Mike asked
>me a long time ago to make sure folks download the software from him;
>it's free anyway.
>
>  Since it was fairly easy for me to get all the pertinent data (and any
>kind of in-car dyno software is _very_ sensitive to input parameters,
>like weight and actual tire diameter), and had a pretty flat and level
>stretch of road to test ;-), I was able to come within 5% of my actual
>dyno runs.  In most cases though, as when you try to see improvements in
>hp, you only need consistent parameters, not necessarily exactly right.
>I could easily see on the graph improvements (or losses) of as little as
>5hp... I'd consider any less pretty much in the noise, even on a real
>car dyno, there are just too many variables to give you any better
>consistency in real life use anyways.
>
>I have Mike's email address if you're still interested.  For recording I
>used my camcorder external audio input, and it worked great, no false
>spikes or anything like that, just nice relatively noise free pulses.
>
>The only reason I don't use the software now is because I have an
>automatic, and the converter slippage messes up the hp calculations big
>time.  I haven't contacted Mike in a while, maybe he's come up with some
>sort of algorithm to overcome that problem.
>
>Daniel
>
>


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