6.5 diesel .xdf and adx

[newellshk]

It looks like the code doesn't check the DTC enable flags at all for those two. I'll find another way to disable. Do you care if the codes are actually gone or just that the MIL isn't illuminated?

[newellshk]

I found a way to disable DTC 17 by changing the instruction that increments the counter to a NOP. In tunerpro it'll be a simple scalar where you change the value from 4C to 01, with instructions/explanation included. I'll figure out 18 then post a new xdf.

[newellshk]

Here it is. The flags have been replaced by scalars, just open them and change the 4C to 01.

[brian617]

Thank you Thank you Thank you! I'll try soon and report back.

[brian617]

Do you care if the codes are actually gone or just that the MIL isn't illuminated?

The shop that did the manual pump conversion 20 years ago just pulled the SES light bulb. I'd like to re enable it. They also did a super crappy job with the pedal conversion, coolant temp sensor and few other things. I reworked the pedal already, I'm super picky lol.

[newellshk]

Absolutely. I wasn't implying you should disabled the SES light, only that on some masks you can choose which codes cause it to light up. In this case that wasn't an option. Regardless the solution I came up with should disable it completely. Just make sure the value of those scalars is 4C, otherwise the code layout is different and I'll need your bin to find the correct address, but I think it should be correct already.

[ohminen]

Just got one power bin file to observe. It has a lot of changes compared to BPDP file. Almost everything is changed. Have not tried it yet.
I was told it has non steady Idle.
Any interest to study it?

[ohminen]

And here is the bin

[newellshk]

Not much difference between that bin and stock BPBS.

The speed governor has been bumped to 98 MPH from 85 (with power restore at 96 vs original 83).
The Fuel Reduction RPM vs CTS table is slightly reduced, but that will only have an effect as the engine temp rises over 210F.
Desired Idle is lowered from 600 to 562.5 RPM when coolant temp is between 175-218F (blended in between 132-261F).
Then there are a bunch of trans pressure differences. It looks like the trans pressure vs temp tables are a bit higher and the base pressures a bit lower, so net affect probably not too significant. Those are probably just different factory calibrations.

[ohminen]

Thank you for the fast analyze. Hope I have some time to test it soon. What were the BPBS specs?

[brian617]

Absolutely. I wasn't implying you should disabled the SES light, only that on some masks you can choose which codes cause it to light up. In this case that wasn't an option. Regardless the solution I came up with should disable it completely. Just make sure the value of those scalars is 4C, otherwise the code layout is different and I'll need your bin to find the correct address, but I think it should be correct already.

Set both scalars from 4C to 01, 17 goes away and stays gone, 18 came back.

[newellshk]

Okay, I looked again and there are two places, each with it's own counter, where DTC 18 is set. I added another entry in the xdf where you make the same 4C -> 01 change and hopefully this time the code will stay gone.

[ohminen]

Okay, I looked again and there are two places, each with it's own counter, where DTC 18 is set. I added another entry in the xdf where you make the same 4C -> 01 change and hopefully this time the code will stay gone.

Lots of progress in xdf file. Thank you very very much. I would like to tune warm starting faster. There is cranking fuel RPM? vs. CTS map.
Good suggestions what to change?

[newellshk]

I can't really give any suggestions about the warm starting. I would imagine that any combination of imperfect injectors, injection pump, pump timing, batteries, starter, etc would progressively cause harder starting, and adding fuel and/or timing might help in some cases. I would think that it would be safe to add 10-20% fuel to that table in the temp ranges you are targeting and see what happens.

I will try to find some time in the near future to look at the code that deals with starting and work to expand the tables/scalars and documentation for them. Maybe then I can give some better suggestions, but keep in mind I'm not an experienced diesel tuner.

[brian617]

Okay, I looked again and there are two places, each with it's own counter, where DTC 18 is set. I added another entry in the xdf where you make the same 4C -> 01 change and hopefully this time the code will stay gone.

That did the trick, thanks again!

For anyone with a manual DB2 pump conversion I'm almost done nailing the shift table to fix the erratic shifts caused by the conversion. Will post .bin when I'm confident in it.