OBD 1.5 Tuning

[mrogersmike]

Well, I think this is pretty close. Looking at the log right after up-shifts there is now just a real short spike rich and comes right back inline. When the throttle is opened up again there are no lean spikes.

I had tried adding more spark advance in different areas just to find the bin I posted earlier was creating more power where I needed it so I went back to it and is reflected in this bin that I'm currently running.

Lean cruise is working great now, thanks Robert.

My logs are of a whole run to town and back. This usually fills my BLM tables and makes them kinda of long. Which to me seems to be what I should be doing?

log9.zip

rodeoa.bin

Let me know if there's anything else I should look into or what more I can do.

BTW- I appreciate the time you have/are spending with this.

[robertisaar]

just now picking back up into this, keyboard was down for a while, then I started forgetting about projects....

I have a new version of the XDF ready to go that has a few prior patches built into it, including one I wrote today that takes the static highway fuel target AFR and allows you to change it vs MAP, much like how highway spark is done.

for the boost stuff(which I'm slowly getting to), I found an additional complication: both the E and T sides read the MAP sensor on their own.... that data isn't passed over SPI(likely due to any possible signal lag), so I may need to swap out some of the data sent over SPI and change the T-side's MAP calc to rely on the E-side since there isn't really room to emulate it using what leftover space there is on the t-side. MAP isn't used a lot on the t-side(mostly for baro corrections from the looks of it), so a slightly slower update to the MAP value shouldn't cause many/any issues, but it does need to be accurate for the baro calcs, otherwise some unusual drivability issues will pop up from the PCM thinking that there is a lot less baro pressure than there should be.

[caffeine]

Sweet

[mrogersmike]

Just now seeing this.

I will try out the changes made. EDIT: I miss read your post. I thought you meant you already submitted the new XDF. Patience....

Maybe I should start making piping for the turbo.....

[mrogersmike]

I have the turbo, intercooler, and piping now. I'm thinking I am going to start on the exhaust in the next week or so. Just put a turbo on my son's truck so I'm itching pretty bad to get something done on mine. Even if it's just making it ready to go.

[robertisaar]

........ has it really been this long since I updated?

https://www.dropbox.com/s/5jfa0iqz6sfs46q/P66%20V6%20Boost.zip?dl=0

boost-capable P66 V6 code. after this patch can be verified as bug-free, MAF can be added in. at first, only for monitoring purposes, then have it be able to be blended in any ratio the end-user wants for static fueling(transients will still be speed-density based). if one wanted to go insane, a 3D table of RPM vs MAP with the values it contains being blend ratios of speed-density vs MAP fueling?

I don't know if cylinder-mass based spark is popular or not? it's certainly used with every OBD2 application I'm aware of, but I don't know if it has any advantage over MAP.

I think reversion correction would be prudent.... is that only RPM dependant, or is there a throttle/MAP factor involved as well?

[mrogersmike]

Thank you!

It may take me a bit to get in up and running as I'm loaded up with projects for a few weeks, but I will get the turbo installed and try it out.

On a side note, the 3100 took a rod out when our son was using it(go figure) so I have a 2004 3400 installed now. I have yet to tune it and I used the 3100 injectors and I'm assuming it's starving for fuel as is. I will have to get it back to a decent tune before moving forward. I will keep you up to date on the progress and I'm sure I'll have questions later.