I did a search on the thresholds and apparently within Tunercat it is called "Fast O2 rich/lean threshold (mv) Vs. CL mode". I can't find anywhere in my version of Tunercat. I'm running v2.28

 

OK I just checked an older version I have around (2.15). It's on TC-Tables - then top selection of middle column. Actually you need two tables, CL Mode Vs Air Flow to find CL Mode , then the Fast O2 table setting for the CL mode. By the way I messed up, just saw you 'Street Twin' in your sig and realized you are an M6. The stock Rich/Lean settings for an M6 are leaner than an A4. I sent you an email with M6 and A6 .bins to look at , if you can get TC to show them..

 

Bob,

Thanks for the stock files I can compare against.

I verified my fuel pressure was 43 psi. Since I know the fuel pressure is correct, I ended up using the stock injector offset vs. battery voltage table in order to experiment at seeing what that would do to the blm's. Flashed the pcm and they came right back in line very close to where they should be at idle. 125/126 Long terms which I can easily tweak the offsets to get try and attain 128/128.

The car runs much better, and I will be raising the idle to 850/900 instead of 750.

Throttle response is much crisper and improved the driveability substantially.

As for the CL Mode in Tunercat, I could not locate it. My $EE definition file was very old and does not include both CL Mode Vs Air Flow and Fast O2 table. I have contacted tunercat to obtain updated version of the $EE definition.

I appreciate your help throughout this frustrating time.

 

When you get it on the road do a data log of normal driving and a couple of 0-60 accelerations. Then look at the BLM's in BLM cells 4-15 and make sure you are OK in all driving ranges. If not then you can tweak the MAF tables at the bad AFGS ranges up or down. MAF tuning will effect specific operating (AFGS) ranges. Where tweaking the offsets effects across the board. You can also use the 'Individual cylinder trim multiplier" to tweak idle (TPS=0%) and off idle (TPS 0-14%) AFR as the MAF flow at those ranges is low and you don't have a lot of flexibility. With cam, intake mods you may tend to run richer at low AFGS and leaner at higher. Between trim table and MAF tables you can get it dialed in across the board. Have you put you injector flow setting back, I recall you modified it during problem determination .... Good Luck.

 

I put the injector flow rate to the rated spec of 42.29 back in when I re-flashed the pcm. Some more datalogging is in order for sure. The car runs slightly rich in lower rpms like you said, but I haven't taken past 3500 yet though. Taking one step at a time and will be picking up a wideband sensor to wire into the deleted A/C pressure sensor wire so I can datalog along with Datamaster.

PS, I was able to obtain an updated version of the $EE which includes the Rich/Lean O2 and CL Mode tables.

 

When tuning thing AFR think operating range or BLM Cell , as that's how the PCM manages fueling. Below is a 'stock A4' BLM boundry selection table, the M6 is the same except for the 700 RPM setting is replaced by 900 RPM. . I noticed yours is stock. As you data log you with your mods (cam) most likely you never go below MAP = 32 Kpa unless you are decelerating the engine. So you will not be using BLM Cells 0-3, You also may want to keep an eye on the RPM and see how often you use cells 4,8,12. The more cells you use the more control over different operating ranges the PCM has. I modified my BLM boundaries to match my engine operating characteristics after my cam install. Something to keep in mind.. Play around with the DataMaster Histogram tool, gives good perspective . Click view-click Histogram- then move log record # slider slider on main display to record #1 (if that's where you want to start)- move slow/fast slider to fast- click play. On Histogram popup window you can click options- select view classic or view enhanced to jump between AFGS report or BLM cell report. Play with radial buttons on Histogram display to look at LT/ST/left/right readings. Ignore any BLM cell 17 or 18 stuff as you can't tune them.. BLM cell just prior to entering WOT is important as it is remembered during PE fueling. You don't want the Lt's to be below 128 (pulling fuel) as the PCM will continue to lean out you WOT mix appropriately.

 

In the data logs I've looked at, if the PCM enters PE mode in a cell that was adding fuel, it uses the BLM's. If the cell was pulling fuel, it doesn't use them, and defaults to 128. Have you seen anything similar?

 

Good to know, learn something new every day. I don't have equipment to do PE tuning, depend on members with more practical experienced with PE logs w/wideband logging capability.
For my future reference, we are saying If we enter PE from a cell where LT's were adding 5% then the PCM would add 5% to the PE calculation. Resulting in a WB AFR that matches the calculation AFR. But if we enter PE from a Cell pulling 5% then the PCM would ignore that and just use the calculation results. The later then show a 5% richer PE AFR on the WB. Sounds like a failsafe to prevent a lean PE if O2 data was incorrect.

 

That's what I have seen happen. Sometimes it will go to Cell 15, and use the + BLM's, other times it will go to Cell 18 and use 128. I've discussed this in other threads and people have confirmed that's the way it works. I have no idea how that gets set up in the tune, or whether you can even adjust it. I ditched my stock PCM 13 years ago.