Readiness - Catalyst
- Thread starter carabuser
- Start date
@carabuser for the HPFP cold tables, one of these 2 controls the coolant temp switchover point for the cold/warm tables. I think it is the one on the left.
The only other cold table I have is for the rail pressure target, which is this table.
There has to be another one - probably a current or current to flow table that governs the start/cold cycle. I assume it is open loop, and that is why people report the noise until the cutover to the warm table (which I am sure has some sort of PID or other control on it).
The only other cold table I have is for the rail pressure target, which is this table.
There has to be another one - probably a current or current to flow table that governs the start/cold cycle. I assume it is open loop, and that is why people report the noise until the cutover to the warm table (which I am sure has some sort of PID or other control on it).
The first set of values you posted for selecting the pressure target map between cold map (KF_PRAILK_H) and hot map (KF_PRAIL_H).
KF_PRAILK_H is probably the table you want. I'm away from my machine at the moment so have no WinOLS or IDA. I'll get the IJE0S address when I'm back home later in the week.
KF_PRAILK_H is probably the table you want. I'm away from my machine at the moment so have no WinOLS or IDA. I'll get the IJE0S address when I'm back home later in the week.
I haven't checked it, but an IJ cold is posted here:
www.spoolstreet.com
Cold start overdriven hpfp rattle fix needed
So @V8bait modified my tune and she started like a dream and no more rattle with cold start deleted . She fired up perfectly first go without any stumbles or hesitation. Thanks AzNdevil you are a bloody legend. glad it worked out ;) attached here for ikm0s peeps Don't trust the Fuel...
www.spoolstreet.com
That strategy works, but it the same tables I have listed above. Just bypassing the cold tables by setting the transition to warm and a very low ECT.I haven't checked it, but an IJ cold is posted here:
Cold start overdriven hpfp rattle fix needed
So @V8bait modified my tune and she started like a dream and no more rattle with cold start deleted . She fired up perfectly first go without any stumbles or hesitation. Thanks AzNdevil you are a bloody legend. glad it worked out ;) attached here for ikm0s peeps Don't trust the Fuel...
Ok, I wasn't sure if prail cold was in that one, but I'm sure it's bouncing around here somewhere. There are 2 options, reduce the temp it switches to warm table (lower pressure target at low rpm) or reduce the pressure targets in the cold table. It isn't open loop or outside of PID control during cold.
@mj6234
Add this line to your IJE0S XDF:
Add this line to your IJE0S XDF:
Code:
<XDFTABLE uniqueid="0x2B7D" flags="0x0">
<title>HPFP Target (Cold)</title>
<description>KF_PRAILK_H</description>
<CATEGORYMEM index="0" category="2" />
<XDFAXIS id="x" uniqueid="0x0">
<EMBEDDEDDATA mmedtypeflags="0x02" mmedaddress="0x7D922" mmedelementsizebits="16" mmedcolcount="8" mmedmajorstridebits="0" mmedminorstridebits="0" />
<indexcount>8</indexcount>
<embedinfo type="1" />
<datatype>0</datatype>
<unittype>0</unittype>
<DALINK index="0" />
<MATH equation="X">
<VAR id="X" />
</MATH>
</XDFAXIS>
<XDFAXIS id="y" uniqueid="0x0">
<EMBEDDEDDATA mmedtypeflags="0x02" mmedaddress="0x7D932" mmedelementsizebits="16" mmedcolcount="8" mmedmajorstridebits="0" mmedminorstridebits="0" />
<indexcount>8</indexcount>
<embedinfo type="1" />
<datatype>0</datatype>
<unittype>0</unittype>
<DALINK index="0" />
<MATH equation="X*0.048828125">
<VAR id="X" />
</MATH>
</XDFAXIS>
<XDFAXIS id="z">
<EMBEDDEDDATA mmedtypeflags="0x06" mmedaddress="0x7D942" mmedelementsizebits="16" mmedrowcount="8" mmedcolcount="8" mmedmajorstridebits="0" mmedminorstridebits="0" />
<units>MPa</units>
<decimalpl>2</decimalpl>
<min>0.000000</min>
<max>255.000000</max>
<outputtype>1</outputtype>
<MATH equation="X*0.000610351563">
<VAR id="X" />
</MATH>
</XDFAXIS>
</XDFTABLE>Nice!!!!!!
Just a comparison from cold to warm. That other setting just forces things to the warm tables. I will find some reasonable middle ground to not get the clatter, but still target higher pressures than the warm.
OK, got my Helix installed. Reminder that I am flex fuel and I believe some of the cold start stuff is disabled to make the flex fuel code work. I am unsure if this table is impacted or not, but @Jake@MHD can confirm.
I looked at the warm tables and took some guesses as to what might work. I assume BMW was lazy and targeting 17bar for a non-overdriven pump just wasn't possible in the lower RPM range - hence no chatter on the stock tables. I also assume 17bar is not ideal at idle and there is some mechanical reason for the chatter at that pressure level. At any rate, I tried the below values and have no chatter as I have seen in other videos that have been posted. There is a 2-4 second 'squeak' or something that is hardly noticeable, but that seems to happen on warm startup too.
Big thanks to @carabuser for finding the tables and letting me test!!!!
I looked at the warm tables and took some guesses as to what might work. I assume BMW was lazy and targeting 17bar for a non-overdriven pump just wasn't possible in the lower RPM range - hence no chatter on the stock tables. I also assume 17bar is not ideal at idle and there is some mechanical reason for the chatter at that pressure level. At any rate, I tried the below values and have no chatter as I have seen in other videos that have been posted. There is a 2-4 second 'squeak' or something that is hardly noticeable, but that seems to happen on warm startup too.
Big thanks to @carabuser for finding the tables and letting me test!!!!
Last edited:
Directed here from the troubleshooting forum. I have STFT and AFR oscillations at idle. I'm IJE0S. I have my .bin file, the IJEOS FF XDF from github, and TunerPro RT but I'm unsure how I would go about implementing the suggestions in this thread to disable cat diagnostics?
You're going to have to add the needed tables to the XDF. You can right-click on the category you want to add the tables to and create a new "XDF Parameter". Read through this thread and see if the necessary tables for IJE0S have been posted, I can't remember and I have I8A0S. It might just come down to disabling the Cat Diagnosis switch if you're lucky. Seems like different ECUs need slightly different tables. Doesn't hurt though to disable all the other emissions crap either...
@carabuser might have the tables for IJE0S.
Here you go, I forgot to put them in a group so they're just at the bottom.
@corbanistan and @nyt
really appreciate the assistance. Opened my .bin and the .xdf above from nyt. edited the values to 78 and 1774 on the above tables and saved my .bin. All I need to do is flash the new .bin ? that's it ?
really appreciate the assistance. Opened my .bin and the .xdf above from nyt. edited the values to 78 and 1774 on the above tables and saved my .bin. All I need to do is flash the new .bin ? that's it ?
Iam running catless no rear o2s for a lil over a year with no issues by using c conf cat and i also maxed or bottomed all the cat stuff. Id like to inhibit the function blocks completely. Stumbled across lc_var_did_obd_cat doesnt even come up in a search on winols anyone know the address for ijeos? also lc_var_dis_nox its there but there is a lil mix up between the icmos and ijeos i dont want to mistakingly disable the wrong thing
Hey guys, would any of you who typically had the idle / cruise oscillation issue be able to work w/ us at MHD on a better fix to this?
We added these changes to the app as of 3.0x release, but after doing some more digging we are not happy with the inhibited lambda diagnostics / inability to set O2 / O2 heater readiness. So we would like to see if there is perhaps a better method. If you have WhatsApp, that would be preferable.
Thank you
We added these changes to the app as of 3.0x release, but after doing some more digging we are not happy with the inhibited lambda diagnostics / inability to set O2 / O2 heater readiness. So we would like to see if there is perhaps a better method. If you have WhatsApp, that would be preferable.
Thank you
I have catless DPs, but did my own flash and can test change & log stuff as needed. IJE0S. I have FF tune if that doesnt rule me out as a candidate.
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