Injection phase / end angle for 32-bit?

td-d · **Posted:** Thu Jan 21, 2016 4:33 am

Thanks for the feedback, very curious to see if this works - I guess if table 1 does not have the required results, the 3D tables are still an option to play with.

td-d · **Posted:** Tue Jan 26, 2016 5:17 am

Any more feedback?

redwagon · **Posted:** Wed Jan 27, 2016 3:00 am

Had a deep cold snap last few days so didn't do much, so as to keep the effects of unusual cold out of rather subjective impressions.

I tried using more negative values in table 1 (like -30*), which subjectively made tip-in worse while making fuel trims more negative. Next step was to go back to zeros in table 1 and go to 170* up to 2k8rpm in tables 2 and 3. Worse stumbling again, and more negative fuel trims. Next step I tried positive values 210* in 2 and 3, again worse tip-in but this time positive fuel trims.

It looks to me these tables do what they're supposed to in terms of changing AFRs, but perhaps aren't the key to my particular woes.

Now I'm experimenting with moving the point in table 1 at which I transition from -10* back to zero up and down the rev range to find the best results.

td-d · **Posted:** Wed Jan 27, 2016 4:43 am

Ok, so looks like these are indeed the injector timing values, good to know. Hope you come right in terms of the tip in issues...

redwagon · **Posted:** Fri Jan 29, 2016 5:44 am

td-d wrote:

Ok, so looks like these are indeed the injector timing values, good to know. Hope you come right in terms of the tip in issues...

Not so fast there hotshot!

I have noticed my console fuel consumption display jumped up a lot since I started playing with the injector phasing. Can you see how this would be connected? My fuel consumption has indeed increased because of the way I've been fussing with the car, but the display figure is a full liter per 100km above reality, and I did have that dialled in pretty well before.

td-d · **Posted:** Fri Jan 29, 2016 6:53 am

Chuckle... I'd have to dig into the logic to see where it's ultimately pulling the parameters from - if I get a chance, I'll pull these out from a well define rom and try and trace it back.

td-d · **Posted:** Fri Jan 29, 2016 7:32 am

It's definitely fueling related - references to IPW related table and IPW all over the place. Whether it's injector timing or not is the question - adjacent logic deals with overrun fueling, tip in enrichment, cranking IPW, post start IPW comps.

td-d · **Posted:** Fri Jan 29, 2016 9:10 am

Been scratching around in the logic - these tables seem to ultimately affect the calculated fuel target, both in closed and open loop, by the looks of it. Since IPW is the major input into the calculation of the fuel consumption, I assume that's the link.

redwagon · **Posted:** Sat Jan 30, 2016 4:30 am

Ah, that makes sense. Throwing more fuel in at tip-in almost always seems to make it better. I was getting this sort of wooly feeling in part load like I was too fat with fuel, and some surging at low revs and light throttle in low gears. I've put these tables back to stock for now, until we know more about them. Sorry if the rabbit hole turned out longer and twistier than expected!

td-d · **Posted:** Tue Dec 20, 2016 8:56 pm

These are definitely the injector timing table, incidentally. The two larger tables are injection end crank angle based on TGV open or closed state, and the other one is a barometric compensation table. There are other tables in the area that I need to dig out, temp compensation, and what looks like a minimum table as well. Also - if I edit the scaling to add 180 degrees - the end angle tables give a value of 360 - which is the value that is seen in the 16bit MAF roms.

redwagon · **Posted:** Thu Dec 22, 2016 4:23 am

td-d wrote:

These are definitely the injector timing table, incidentally. The two larger tables are injection end crank angle based on TGV open or closed state, and the other one is a barometric compensation table. There are other tables in the area that I need to dig out, temp compensation, and what looks like a minimum table as well. Also - if I edit the scaling to add 180 degrees - the end angle tables give a value of 360 - which is the value that is seen in the 16bit MAF roms.

Cool, thanks. I still have tip-in issues I can't fix to my complete satisfaction so I'm interested in playing with this some more.

td-d · **Posted:** Fri Jan 06, 2017 5:46 pm

Ok - I've added these to the 32BITBASE.xml on my Github branch, here: https://github.com/TD-D/SubaruDefs/raw/ ... ITBASE.xml

Let me know if you want these for your rom - quid pro-quo - post up results!

td-d · **Posted:** Fri Jan 06, 2017 5:49 pm

Addresses for AZ1G202G:

Code:

   <table name="Injector Timing Compensation (Atmospheric Pressure)" address="cadc4">
      <table name="Manifold Pressure" address="cad7c"/>
      <table name="Engine Speed" address="cadbc"/>
   </table>

   <table name="Injector Timing Compensation (ECT)" address="C8130">
      <table name="Coolant Temp" address="C7FF4"/>
   </table>

   <table name="Injector Timing Crank End Angle (TGV Closed)" address="cae48">
      <table name="Engine Load" address="cade4"/>
      <table name="Engine Speed" address="cae24"/>
   </table>

   <table name="Injector Timing Crank End Angle (TGV Open)" address="caf3c">
      <table name="Engine Load" address="caed8"/>
      <table name="Engine Speed" address="caf18"/>
   </table>

   <table name="Injector Timing Minimum Crank End Angle" address="C81B0">
      <table name="Coolant Temp" address="C7FF4"/>
   </table>

redwagon · **Posted:** Sun Jan 08, 2017 3:42 am

Thanks Oren, but I'm having problems on AZ1E400U at the moment

andea79 · **Posted:** Sun Jan 08, 2017 4:51 am

I'm curently running/testing this for a AZ1G202G ... will post back results in a while

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Injection phase / end angle for 32-bit?

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