AutoVE how to for the LS2 E40 PCM using EfiLives AutoVE tutorial

[Gelf VXR]

I'm abroad with work again now, I havn't managed to go open loop speed density with any certainty yet. I'm working on the theory side until I return and am able to have another go.

I was seeing 160 C in the dash board of the scan tool, but when i lookked at the tune tool table it was looking up the row for 16 C.

I did manage a couple of logs, i would post my SD tune and logs, i'm not sure how, is there a host like photobucket for pics?

Here are pics from the scan tool and then tune tool from a paused log play back

1. Scan Tool: IVT = 162 C , ECT = 93 C, MAP = 30 kPa


2. Scan Tool:RPM = 2038


3. Tune Tool: IVT = 96 C, ECT = 20 C both incorrect


4. Tune Tool: MAP = 30 kPa correct, IVT = 16 C incorrect


5. Tune Tool: RPM = 2000 correct, MAP = 30 kPa correct

[mr.prick]

AutoVE how to for the LS2 E40 PCM using EfiLives AutoVE tutorial

Create an AutoVE MAP

Note the following

8. Select Engine RPM from the parameters drop down list

10. Open calibration {B0200} Main VE table

11. The following labels should appear in the Col labels field:

,400,800,1200,1600,2000,2400,2800,3200,3600,4000,4 400,4800,5200,5600,6000,6400,6800

13. Select Intake Manifold Pressure (kPa) from the parameter drop down list

14. The following labels should appear in the Col labels field:

,15, 20.5, 26.3, 31.8, 37.5, 43.1, 48.8, 54.4, 60.0, 65.5, 71.3, 76.9, 82.5, 88.1, 93.8, 99.4, 105


Repeat process for BEN_LC12. It is possible to logs BENS on both banks

Set up Open Loop, Speed Density

SPEED DENSITY TUNE

VE TABLE {B0200} + 10%

MAX VE {B2030} + 10%

DFC0 enabled below {B0247} set to -40

DFCO enabled above {B0248} set to 122

PE MODE {B3618} set to EQ 1 (14.63)

OPEN LOOP COMMANDED AFR: IVT MULTIPLYER {B0146}

COMMANDED FUELS MUST BE SET TO EQ NOT AFR (WILL NOT FUNCTION
CORRECTLY IN AFR)

Look down the columns labeled

65 kPa all values less than .11 to .104 (14.06)
70 kPa all values less than .11 to .108 (13.54)
75 kPa all values less than .12 to .112 (13.06)
80 - 100 kPa all values less than .12 to .113 (12.95)

LTFT MAP DISABLE below {B1510} set to 110 kPa

LTFT ENABLE above {B1508} set 122

LTFT DISABLE below {B1509} set to -40

CAT PROTECTION {B0804} set to no

MAF HIGH FAIL {C0301} set to 2

MAF LOW FAIL {C0302} set to 1

MAF HIGH FAILURES {C0303} set to 1

MAF LOW FAILURES {C0305} set to 1

COOLANT TEMP CLOSED LOOP ENABLE {B1502} change from

85.000000
80.000000
75.000000
65.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000
55.000000

All to 122

Save and upload, Don’t unplug MAF, start engine and check for DTC's to indicate MAF failure, any of P0101, P0102 and P0103. Clear DTC's. Return to SD tune set P0101, P0102 and P0103 to NO MIL, save and upload

why are we still told to set PE to 14.63?
personally i don`t want to be 14.63
at low kPa and high RPM. (high RPM deceleration or with any FI)
just my opinion of course.

[Gelf VXR]

why are we still told to set PE to 14.63?
personally i don`t want to be 14.63
at low kPa and high RPM. (high RPM deceleration or with any FI)
just my opinion of course.

I'm new to this, as far as i am aware there are two areas the PCM looks up to determine commanded AFR, PE and commanded open loop, which ever is the richest, is the AFR used. By setting PE to 14.63 means that it is ignored and the open loop map is used instead. How ever, I have been directed to an HP Tuners how to for the LS2 which says to set the open loop commanded AFR to EQ 1 and PE to your desired AFR.

http://www.ls1gto.com/forums/showthread.php?t=200339

http://www.thetuningdoctor.com/HPTun...uningGuide.doc

[Gelf VXR]

I was seeing 160 C in the dash board of the scan tool, but when i lookked at the tune tool table it was looking up the row for 16 C.

I've heard from EfiLive team, there is a bug

[mr.prick]

I'm new to this, as far as i am aware there are two areas the PCM looks up to determine commanded AFR, PE and commanded open loop, which ever is the richest, is the AFR used. By setting PE to 14.63 means that it is ignored and the open loop map is used instead. How ever, I have been directed to an HP Tuners how to for the LS2 which says to set the open loop commanded AFR to EQ 1 and PE to your desired AFR.

http://www.ls1gto.com/forums/showthread.php?t=200339

http://www.thetuningdoctor.com/HPTun...uningGuide.doc

read what i said as to WHY i would not set your PE to 14.63.
unless you are in the high MAP values you will be lean(er)
than you should be at higher RPM.
you don`t want to go road racing like this.

[Gelf VXR]

read what i said as to WHY i would not set your PE to 14.63.
unless you are in the high MAP values you will be lean(er)
than you should be at higher RPM.
you don`t want to go road racing like this.

Bear with with, I understand where you are coming from now, from the table below PE is enabled at increasingly lower TPS values as RPM increases above 3070 with higher EQ values, and where map values are low.

Setting the PE to EQ 1 means the engine will run dangerously lean in these conditions unless provisions are made in the open loop commanded multiplier IVT map. Hence Alternative how to sets the PE to EQ1.13 at all RPM's and commanded open loop to EQ 1, but doing that removes enrichment during cold start and warm up conditions.


RPM TPS PE EQ
0 47.961429 1.080078
510 47.961429 1.080078
1020 47.961429 1.080078
1530 47.961429 1.080078
2040 47.961429 1.080078
2560 47.961429 1.080078
3070 47.961429 1.099609
3580 27.99988 1.120117
4090 15.499879 1.169922
4600 14.498902 1.169922
5120 14.001466 1.219727
5630 10.998536 1.219727
6140 9.500123 1.219727
6650 7.998658 1.219727
7160 7.998658 1.219727
7680 7.998658 1.219727
8190 7.998658 1.219727

Sorry about the table, cant get it to seperate columns


This still leaves two options for setting commanded AFR, bearing in mind that in my recent logs GM.AFR_B reports the 14.7:1, the PE commanded value not the open loop commanded value, during cold start when i know it was commanding richer and was running richer. Could be related to the bug I reported earlier. The BEN value is derived from Actual AFR/GM.AFR_B.

Option A: (EfiLive) Set PE to EQ = 1 and set open loop map values less than EQ 1.13 to 1.13 (running rich in all conditions, engine protected under high rpm low kPa, smooth AFR transition under all conditions, not good for cats thou??)

Option B: (Alternative) Set PE to EQ = 1.13 and set open loop values to EQ =1 apart from where enrichment is taking place during warm up (enrichment during warm up, stoich under low TPS, RPM and MAP, variable AFR's) Could lower the TPS/RPM threshold so that PE is commanded for all conditions??

From what I remember smooth AFR transition is required for AutoVE??

Be gentle lol

[redhardsupra]

never set PE to 1. AFR%error gets calculated from AFRcommanded, thus it will account for non 1 PE's.

[Gelf VXR]

One thing I noticed when replaying a log is that the PCM is not looking up the correct values for Inlet Valve Temp {B0146} Commanded Fuel IVT multiplier.

In the Dash board the IVT is reading 160 C, but in the {B0146} map it is looking up the correct MAP (kPa) pressure accross the collumns but only 16 C down the IVT rows??? In other words far richer than is required which is refelected in my AFR readings.

Forum Admin

I have applied recent software updates, this issue is still apperrent. Will this affect the AutoVE process??

[Blacky]

Forum Admin

I have applied recent software updates, this issue is still apperrent. Will this affect the AutoVE process??

Use the attached cal_link.txt file which includes the B0146 link PIDs:
;Open Loop Fuel IVT Multiplier
B0146.ROW=E38.INVLVTMP_DMA
B0146.COL=SAE.MAP

That means you must select the E38.INVLVTMP_DMA PID to get the link to work.

This file is part of the new 7.5 release that is being cut to CD this week.

Regards
Paul

[Gelf VXR]

Use the attached cal_link.txt file which includes the B0146 link PIDs:
;Open Loop Fuel IVT Multiplier
B0146.ROW=E38.INVLVTMP_DMA
B0146.COL=SAE.MAP

That means you must select the E38.INVLVTMP_DMA PID to get the link to work.

This file is part of the new 7.5 release that is being cut to CD this week.

Regards
Paul

Your a star thanks