[Diy_efi] Gauge/Sensor accuracy?

[Perry Harrington]

Neil,

Post as much info as you have, I can probably assist you with
this.  I've got a 5.0 myself, and I've done some tuning to
understand what the motors do when a certain set of values is
applied.

Have a look at the idle PW calculator at my site to get a good
starting point.  The REQ_FUEL value is the most important value,
so getting it right from the start will help tremendously.

The site is http://www.dainst.com/

I'm very interested in your progress.

BTW, stumbling is usually due to a lean spot.  If it only happens
on accel, your pump shot is too small.  If it happens at cruise,
that spot is too lean, fatten it up by increasing the VE value.

--Perry

On Sat, Jun 29, 2002 at 06:39:39PM -0500, EFI Dude wrote:
> Hi,
> 
> Have a stumbling problem on my 5.0 EFI, and before I start
> testing and gathering data, I want to make sure my measurement
> tools (VDO aftermarket cockpit-series gauges) are accurate.
> 
> The question is, how accurate are these?  Especially the
> temp and fuel-pressure gauges?  I had seen the sender
> output chart (V-out vs. pressure) for a SW pressure sender
> some time ago (can't find it now), and it was really
> non-linear, and all over the place.  My guess is that the
> gauge is not compensated for this, hence my concern.
> 
> Anyone have any thoughts on this?
> 
> Thanks,
> -Neil.
> 
> 
> 
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-- 
Perry Harrington			Data Acquisition & Instrumentation, Inc	
perry at dainst dot com					 http://www.dainst.com/		 

Those who would give up essential liberty to purchase a little temporary safety
deserve neither liberty or safety. Nor, are they likely to end up with either.
                             -- Benjamin Franklin

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