SpeedPro Tuning

[John Walker]

Jörgen and Bruce...thanks for the replies.  I'm sure i'll have more 
questions when the unit arrives and i get it installed.  This gets me on the 
right track.

Later,

John

>From: Jörgen Karlsson <jorgen.m.karlsson at home.se>
>Reply-To: diy_efi at diy-efi.org
>To: <diy_efi at diy-efi.org>
>Subject: RE: SpeedPro Tuning
>Date: Mon, 18 Jun 2001 18:35:14 +0200
>
>Hi,
>
>I have done some tuning with the speedpro.
>
>Do most of the tuning on the road, you only need a dyno after the ve table
>is finished. That is to find the correct target AFR and to optimize the
>ignition curve for your engine. It is a lot easier to listen to knock on 
>the
>dyno then on the road.
>
>A good start is to get a map from a similar engine, then you change the
>displacement to that of your engine. Do the same thing with the injector
>size. This part is very important.
>
>First you have to set up the datalogging, unfortunally I have forgot all
>about this part. But aim for 15s logtime.
>
>Now you need to make sure that the 'dash' you use has all the parameters 
>you
>need in the log. I find o2corr, o2, o2target, intake pressure and tps to be
>helpful.
>
>Go to the VE screen. Choose a dash that are suitable.
>
>Let the engine idle until it has warmed up.
>
>Then check how much the speedpro has to compensate at idle, 'o2 Corr' is
>what you look at. Mark the area where your engine idles and press '*' if 
>the
>speedpro adds 15% then type 115 in the window that has come up. If it
>subtracts 15% then type85 in the window.
>
>Now it is time to do a pull at very low load. Go to the log screen, lock in
>second gear start the logger and drive at the same load until you dont want
>to rev it more.
>
>Take a quick look at the log, then go to the ve table again. Press 'o' (if 
>i
>remember right) the log file is now traced on the map. When you follow the
>trace with the arrows the dash present the values in the log at that load
>site.
>
>Make any needed changes, make an other testrun at the same load. Make more
>corrections if needed. Then copy that row of VE data all the way to the top
>of the map.
>
>Now repeat the test run at the next load level, continue until you are at
>full load. Compensate where necessary.
>
>As long as you are withing +-7% correction you are ok, very fast cars need
>to get a bit closer.
>
>Good luck
>
>Jörgen Karlsson
>Gothenburg, Sweden.
>
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