Re: [ISTA] ALDL Data stream viewing question

[AWD43@aol.com]

Thanks Mark,
because the diacom actually saves the physical ALDL data to a file,
I was able to ad-hock the desired boost numbers, and actual boost 
numbers for viewing by using a hex editor, then Word, then Foxbase,
 then excel..    I'm sure there is an easier way, but I'm programming
 challenged.   With lots of valuable help from  Barry & Daron, I was 
able to "sort-of" conclude that if your wastegate 
spring becomes old & weak, the boost will be lower than the "desired" 
boost and the ECM can sometimes cause a see-saw effect by trying 
to raise the boost, and going too far, then lowering too far, then raising
 too far, etc..    It seems to be a little slow to react at times.
After playing with the boost increment & decremnt values in the chip,
 I figured out that an additional external return spring on the WG actuator
really helped to stabilize things..  It's sort of hit or miss, but when the
"actual" boost numbers average _slightly_ higher than the "desired" 
boost numbers, thing become VERY steady... This was with my truck, 
your numbers may vary.   All this would be unattainable if it wasn't
for all the work that Brian G. & Todd A. put in on the 3bar chip program.
You can for get reliable ECM based boost control over 15 psi without it.
Mike V 
>  Mike,
>  
>  I did a run using my scanner and found the desired boost to be :
>  6.4 psi until the actual boost hit 10 psi then the desired boost went up to
>  12.6 psi until the actual boost hit 12 psi then it went to 13.8 psi.
>  This is with the factory chip not sure what you would see on a performance
>  chip.
>  
>  Mark