I have been attemptiing to tune my GM solenoid over the weekend and I have noticed some strange things. when I start in 3rd around 2.5k and go WOT I get a nasty boost spike about 300 load @ about 3600rpms. but when I do a 1st through 3rd gear pull my boost stays around 1.3 and tapers a little and starts to go back up a little. My goal is to try to get around 1.5 with just a little taper.
Sorry I don't know how to add images from ecuflash
here is my:
load also seems to hit 250 load right after each shift and then drops to around 215 and raises to about 225 and tapers back to 215 at redline in the 1st-3rd pulls.
the boost gauge seems to read about 1.4 and then taper to about 1.2
Hopefully this makes sense to you guys
Any help would be appriciated,
thanks,
ed

 

^^^I just realized that probably is hard to read the values.
How do you guys post the images from ecuflash?

 

Take a screen shot while ECU flash is running.

1) Alt + print screen if you have a pc
2) Open MS Paint and go Edit Paste
3) Save the file as a jpg and then attach to message should be good to go

Or add the "Code" tags around the data above. It should help a bit.

 

thanks! maybe this will make it a little easier to understand
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I would try to make all duty cycle the same.l im using stock but im able to stay at 20-21 to redline with no taper, sometimes peak at 22. I set duty cycle all same like stock map but to 90.5 straight accross. I adjusted duty cycle, seems to work great. hope this helps.

 

No, that does not work on a GM solenoid or with a new pill with the stock solenoid.

You have too much duty cycle in the lower RPM areas. I would bring them down. Also make sure your TBEL+BCLO is dialed in with what loads you want/are hitting.

 

Ok I did some more playing around with the car today and I think I'm making progress. with the changes I made I was able to eliminate the 300 load boost spike. I now am seeing about 250 right at the shift and it drops to about 220 and raises to about 235 and tapers to 220. on the way home I shifted to 4th @ about 3k I went WOT and at about 3.5k my boost gauge went to 1.4bar and stayed flat for about another 1k then I lifted the throttle, the log showed load of 243 to about 241 right before I let off the throttle.
here are my current settings, just seeing what you guys think? I'm about .1-.2 bars away from where I want to be.
thanks,
ed
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[IMG][/IMG]

 

WGDC looking better. Still think you might have too much % at 3000,2750 and 2500.

Get on the highway in 4th and 5th gear cruising under 3000 rpm and then go WOT and see if it overboosts.

 

and start logging WGDC ... you NEED to see what is going on with it to understand why your boost is doing what it is doing.

it also might help to tweak the rpm points in your WGDC table. Right around where your spool kicks in and you want to catch the boost, adjust the rpm points so they are pretty close together so you can go from 100% to 80% (or whatever) very quickly. Otherwise with the 250rpm spread you have it takes 250rpms to get from 100 to 80 vs only taking 100 rpms. You'll see the slope of the WGDC when you log it and see that you want it to be pretty steep to catch the boost.

of course it is a whole other issue dealing with any spike during shift vs. avoiding slow spool ... I'm still working on that so I have nothing useful to add.