WBO2-Tuning Spreadsheet

[De-stroker]

There is a string of "Average IF" in the spreadsheet.

Average If, = Closed Loop
Average IF PE, = False
Average IF AE, = False

BLM's are not used and are Completely disregarded.

BLM's above 128 are lean.
BLM's below 128 are rich.

Increasing the VE table cell value (for example 2400 RPM, 70KPa) 68 to 78 will lower the AFR ratio (for example 15.2 AFR down to maybe 14.6 AFR, just guessing here to illustrate what will typically happen). Likewise if the BLM averages where 138 and changing the cell valve from 68 to 78 the BLM average will lower to 133, again just guessing.

PE is filtered to Average IF, PE = Active

To actually achieve 14.1, the Narrow Band O2 sensor voltages will need to be adjusted in the chip, which I've never done. The Narrow Band O2 sensor voltages are attempting to correct BLM's to 128 or 14.7.

I would first get the AFR's close to 14.7, then tweak the Narrow Band O2 sensor voltage to get the BLM's for E10 AFR.

Quite often BLM's and AFR's will contradict each other.

I like tuning with AFR, because the engine will run better than tuning with BLM's!

dave w

[MAC]

Hoping that it is okay for me to post these things here and that other folks new to tuning can learn from this. If I am out of bounds, mods feel free to delete/move.

1. Will I be "done" with this part of tuning once I have everything in blue for "near idle no PE/AE" and "off idle no PE/AE"?
2. I am surprised that my injector DC is so low. I upgraded the fuel pump. Pressure is around 13 psi. Does this chart (photo) "make sense" to you guys with lots of experience?Injector DC.jpg
3. I am getting a lot of knock. How "bad" is this? How to I make it go away? (see picture)knock.jpg
4. I am getting lots of spark advance at low RPM and high kPa. What does this mean? spark advance.jpg
5. I am very surprised at how much I have decreased VE compared to the stock tune. Again does this "look right"? Could it be related to upgraded fuel pump? Picture shows the difference between the stock BIN and my current tune. VE Tuned vs Stock.PNG
6. Last but not least I thought I would share my current WBO2 map from the spreadsheet. Got a long way to go. Comments welcome. Off Idle WBO2.jpg

Thanks,
AC

[De-stroker]

Hoping that it is okay for me to post these things here and that other folks new to tuning can learn from this. If I am out of bounds, mods feel free to delete/move.

1. Will I be "done" with this part of tuning once I have everything in blue for "near idle no PE/AE" and "off idle no PE/AE"?
2. I am surprised that my injector DC is so low. I upgraded the fuel pump. Pressure is around 13 psi. Does this chart (photo) "make sense" to you guys with lots of experience?Injector DC.jpg
3. I am getting a lot of knock. How "bad" is this? How to I make it go away? (see picture)knock.jpg
4. I am getting lots of spark advance at low RPM and high kPa. What does this mean? spark advance.jpg
5. I am very surprised at how much I have decreased VE compared to the stock tune. Again does this "look right"? Could it be related to upgraded fuel pump? Picture shows the difference between the stock BIN and my current tune. VE Tuned vs Stock.PNG
6. Last but not least I thought I would share my current WBO2 map from the spreadsheet. Got a long way to go. Comments welcome. Off Idle WBO2.jpg

Thanks,
AC

Your VE is set too low the tune is bringing your IDC way up when it gets bad the knock is going way up. The tune turns up IDC while the WB is leaning it out don't the forget it! Take your log time down on the wb first and if it's still cycling too fast raise your VE it most likely will stay up. Wait for Dave.
Brandon..

[dave w]

Attached is a .zip with a WBO2 data log .csv file to compare your WBO2 data with. The tuning was still in progress, but close. No two tunes are identical, but there are similarities to compare normal looking data vs. abnormal looking data. Tuning can usually correct abnormal looking data (Rick / Lean VE and Excessive Knock).

dave w