Calc.VET: correcting MAF and calculating VE (in single log)

[DrkPhx]

Len - How is it going? Let me know how the PCM swap goes, I'm thinking about doing the same.

After reading this thread it appears there is hope for us '98 PCM owners. If I understand correctly you can substitute the CALC.DYNAIRTMP pid in place of GM.DYNAIRTMP_DMA when using this method to achieve the same results? If so, that is great to hear.

[WeathermanShawn]

DrkPhx:

Hi there.

Yes, the CALC.DYNAIRTMP (Look-Up) is available for the 98 PCM. The actual DYNAIRTMP.DMA is the most accurate as it contains all the temperature modifiers affecting the 'charge temperature'.

Its a relatively small difference when it comes down to the actual VE calculation. So, my advice is go with the DMA Pid if you have it, but the CALC. DYNAIRTMP is a very close approximation.

[DrkPhx]

Thanks. I noticed your pid system names are slightly different than mine. I also don't see the EQR pid in my drop list and I have the most recent version. Is this only available in a beta version in testing now?

[WeathermanShawn]

You mean the Wideband EQR?

I just use the Serial Wideband Option..Load them BBL or V2. I always use the latest Beta downloads...

If you mean EQIVRATIO..mines under the Fuel Tab in the drop down menu..

[tor1965]

Do i need to change the calc_pids.txt for changes in the cylinder volume?(other then ls1).

[WeathermanShawn]

Yes...if you mean Engine Size.

You can put it here: Edit->Log File Information->Vehicle Options->Engine (cc);
Or change Calc_pids.txt: See Bold print for changes in Engine size..

*CLC-00-300
% 0.0 100.0 .2 "{SAE.MAF.gps}*({GM.DYNAIRTMP_DMA.C}+273.15)*3445. 2/(5.669*{SAE.RPM}*{SAE.MAP.kPa})*{CALC.SELBEN}"
VE 0.0 2.468 .4 "{SAE.MAF.gps}*({GM.DYNAIRTMP_DMA.C}+273.15)*1 5/({SAE.RPM}*{SAE.MAP.kPa})*{CALC.SELBEN}"

Note: The 'Displacement' issue is being worked on..should all be automatic. Edit->Log File Information->Vehicle Options->Engine (cc); Just to clarify, the change is for Engine Size..not cylinder volume Per Se.

[DrkPhx]

You mean the Wideband EQR?

I just use the Serial Wideband Option..Load them BBL or V2. I always use the latest Beta downloads...

If you mean EQIVRATIO..mines under the Fuel Tab in the drop down menu..

Yes, the Wideband EQR pid is what I was referring to. I dont have it.

[WeathermanShawn]

I load mine up via BBL..I use Joecar's description found here:http://forum.efilive.com/showthread....l=1#post128785

When you choose serial wideband through BBL, you can choose EQR & Lambda. Technically you may not need it (EQR). But it all depends on how you define the WO2BEN1 Pid. You could do it via Commanded AFR and Wideband AFR, but as I recall then you have to select GM.AFR also..you basically 'waste' a few more Pids that way.


EDIT: CALC.WO2BEN "{GM.EQIVRATIO}*{EXT.WO2LAM1}"..You do need at least EXT.WO2LAM1 (or if Analog Defined..see page 1).

[WeathermanShawn]

I/We have started a Draft Copy of the CALC.VET Tuning Tutorial:http://forum.efilive.com/showthread....l=1#post135867

Writing a Tutorial is a major project and the Draft Copy is primarily intended to aid Joecar and myself in the Editing process. It will be eventually merged with the existing CALC.VE Tutorial. We hope to accomplish this by September 1, 2011.

The Tutorial will be subject to numerous edits. It is offered now only as a convenience to our forum readers and participants. Many of the copy and paste functions have been taken directly from the existing CALC.VE Tutorial.

User input is always appreciated. Please keep it professional and topic-related. We welcome as much participation as possible. Thank you for your patience and understanding..

..WeathermanShawn..

[Frozen WS6]

Frozen,

Are you using analog wideband connection...?

If so, is if your wideband is a stock-programmed LC-1...?

If so, then in Shawn's calc_pids.txt file you need to replace {EXT.WO2LAM1} with {CALC.AFR_LC11}/14.7

*CLC-00-110
factor    0.5    1.5   .4  "{GM.EQIVRATIO} * {EXT.WO2LAM1}"

Sorry for not seeing this sooner. I'm using a Dyno jet Wideband 2 with a gauge in my dash (it is factory programed). I hooked it into the efi live black box with the 3 wire plug. This wideband says inputs: are analog 0-5v. Outputs: gauge driver 0-5v analog, calibrated afr 0-5v analog.

I'm not sure if that changes anything in that code you've written.