Progress Thread finally tuning (and more)

Noobz347 · 2026-10-18T12:11:31-0500

JD1964 said:
Noobz,

I understand the interpolation that the ECU does between the lines. However, I have previously verified that my combo idles at roughly 27% air load. Given that fact, on the table you did, can the data in rows 0 and 1 be omitted and thereby opening up entries at other places in the curve to improve the table with actual useable data? Or, is the ECU’s interpolation function good enough that it wouldnt make a difference?

I was thinking maybe an entry at 120% and 140%. Or, other places if you recommend a better strategy. I can pay you for your time if needed.

It is an interpolation like you say.

My recommendation is to run it and pull a data log. We'll let the feedback data tell us where the values need to be changed.

General karthief · 2026-10-18T13:06:12-0500

JD1964 said:
Man this is awesome, thanks! What a treasure it is to have access to people so willing to share their knowledge and spend their time helping. I hope I can help others in meaningful ways. I'll get busy with this tomorrow and follow up! Thank you thank you and thank you again....

You kidding? He googled that sht!
Seriously, I've seen what he worked with, near genius level and fears nothing, he was copilot when I crashed his toy chopper, didn't flinch, just said like "whoops, not good"

JD1964 · 2026-10-18T14:03:07-0500

I just googled it and it says Ford EEC IV does a 4 point interpolation calculation between two set values. That’s pretty good on its own actually

JD1964 · 2026-10-18T16:32:41-0500

I did 3 different datalogs. These are NA, not boosted (yet).

60 degrees ambient temperature.

1. Startup from cold and idle until warmup.

2. Gentle cruise with a few gentle gearshifts.

3. Full throttle 3rd and most of 4th. (had enough roadway but was gaining on traffic and had to let off before the top of 4th)

trying to upload these .csv files and the forum wont accept them

AeroCoupe · 2026-10-18T17:20:53-0500

Just me but if you have not I would do the following:

1) Have the injectors professionally cleaned. I have a set of Lightning 42 lb/hr injectors and they were down to 39 lb/hr and the spray pattern was not good.
2) install a dedicated 12 ga power wire and relay for the fuel pump. Use the old power wire (after the inertia switch) to trigger the new relay.
3) If you can swing it upgrade the fuel lines to 6AN as well as the fuel pump hanger.

This made a difference with my NA 331.

Noobz347 · 2026-10-18T17:29:27-0500

You should be able to drop .csv files now.

JD1964 · 2026-10-18T18:03:58-0500

Here they are

JD1964 · 2026-10-18T18:07:18-0500

AeroCoupe said:
Just me but if you have not I would do the following:

1) Have the injectors professionally cleaned. I have a set of Lightning 42 lb/hr injectors and they were down to 39 lb/hr and the spray pattern was not good.
2) install a dedicated 12 ga power wire and relay for the fuel pump. Use the old power wire (after the inertia switch) to trigger the new relay.
3) If you can swing it upgrade the fuel lines to 6AN as well as the fuel pump hanger.

This made a difference with my NA 331.

The injectors I got from a performance service and were claimed to be refurbished and ready and they dont have much time on them.

I like your idea about upgrading the power wire to the pump. (on the list now)

Noobz347 · 2026-10-18T18:40:58-0500

There are a lot of channels that are not recorded in your data logs:

Exact tag	Description in his definition
`N`	RPM
`LOAD`	Load Actual
`LOADX`	Load%
`TP`	Throttle Position Sensor
`TS`	Throttle Status (CT/PT/WOT)
`MPH`	Vehicle Speed Sensor - MPH
`SPARK`	Spark Advance
`ACT`	Air Charge Temp
`ECT`	Engine Coolant Temp
`BAP`	BARO Sensor
`VBAT`	Battery Voltage
`VMAF`	MAF in Volts (corrected)
`IMAF`	MAF in Volts (uncorrected)
`MAF`	MAF in Kg/hr
`EVP`	EGR Valve Position—his wideband input
`LAMBSE1`	LAMBSE - PS
`LAMBSE2`	LAMBSE - DS
`KAMRF1`	KAMRF - PS
`KAMRF2`	KAMRF - DS
`HEGO1`	HEGO Sensor - PS
`HEGO2`	HEGO Sensor - DS
`PW1`	Injector Pulsewidth - PS
`PW2`	Injector Pulsewidth - DS
`FLAGS1`	FLAGS1—includes OL, bit 2
`FLAGS4`	FLAGS4—includes DFSO, bit 1
`FLAGS10`	FLAGS10—includes WRMEGO, bit 2
`DSDRPM`	Desired RPM
`ISCDTY`	Idle Speed Control Duty Cycle
`ISCFLG`	Idle Speed Control Flag
`AEFUEL`	Accel Enrichment Fuel
`EFTRFF`	Transient Enrichment Fuel
`ATMR1`	Time Since Start
`TUNEPOS`	Tune Position

A few specific corrections:

Use N, not N_BYTE. The latter stops reporting increases above 4,080 rpm.
The MAF entry has inconsistent labeling: its description says kg/hr, but its Units field says lb/min. Preserve the export’s units/header so we interpret it correctly.

Noobz347 · 2026-10-18T18:41:56-0500

Keep ET and your working AFR channel selected, too.

JD1964 · 2026-10-18T18:46:42-0500

Noobz347 said:
There are a lot of channels that are not recorded in your data logs:

Exact tag Description in his definition
N RPM
LOAD Load Actual
LOADX Load%
TP Throttle Position Sensor
TS Throttle Status (CT/PT/WOT)
MPH Vehicle Speed Sensor - MPH
SPARK Spark Advance
ACT Air Charge Temp
ECT Engine Coolant Temp
BAP BARO Sensor
VBAT Battery Voltage
VMAF MAF in Volts (corrected)
IMAF MAF in Volts (uncorrected)
MAF MAF in Kg/hr
EVP EGR Valve Position—his wideband input
LAMBSE1 LAMBSE - PS
LAMBSE2 LAMBSE - DS
KAMRF1 KAMRF - PS
KAMRF2 KAMRF - DS
HEGO1 HEGO Sensor - PS
HEGO2 HEGO Sensor - DS
PW1 Injector Pulsewidth - PS
PW2 Injector Pulsewidth - DS
FLAGS1 FLAGS1—includes OL, bit 2
FLAGS4 FLAGS4—includes DFSO, bit 1
FLAGS10 FLAGS10—includes WRMEGO, bit 2
DSDRPM Desired RPM
ISCDTY Idle Speed Control Duty Cycle
ISCFLG Idle Speed Control Flag
AEFUEL Accel Enrichment Fuel
EFTRFF Transient Enrichment Fuel
ATMR1 Time Since Start
TUNEPOS Tune Position

A few specific corrections:

Use N, not N_BYTE. The latter stops reporting increases above 4,080 rpm.

The MAF entry has inconsistent labeling: its description says kg/hr, but its Units field says lb/min. Preserve the export’s units/header so we interpret it correctly.

I’ll work on these things, thanks

JD1964 · 2026-10-18T18:59:45-0500

Yeah I didn’t realize you wanted me to log every tag. I’ll give it another go

JD1964 · 2026-10-19T07:30:12-0500

Noobz347 said:
Keep ET and your working AFR channel selected, too.

I think ET shows up automatically because I never selected it as a parameter but it shows up in all the logs. I have edited the log payload to include all of the parameters you listed above. The count is 33 but that doesnt include ET. So, 34 parameters includung ET should be displayed on playback for the future logs.

Im struggling to figure out how to change the MAF units display field from lb/min to kg/hr

JD1964 · 2026-10-19T09:44:19-0500

I wanted to show the modified sea level spark table for boost. The finished table is a bit different because the program only has 7 lines for entry and they make you leave the bottom line at 0 so you really only have 6 positions to make entries. The air loads I need to enter has 8 data points. So I had to skip the second and fourth on the entry table and the program averaged the two missing data points. Here is the result. Does this look ok to start with?

Sea Level Spark (only active spark table)

Progress Thread finally tuning (and more)

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

General karthief

wonder how much it would cost to ship you a pair

JD1964

there is enough sticking out to grab on to

JD1964

there is enough sticking out to grab on to

AeroCoupe

lube between the nut and the face. I know my lubes

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

JD1964

there is enough sticking out to grab on to

Attachments

JD1964

there is enough sticking out to grab on to

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

JD1964

there is enough sticking out to grab on to

JD1964

there is enough sticking out to grab on to

JD1964

there is enough sticking out to grab on to

JD1964

there is enough sticking out to grab on to

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Progress Thread finally tuning (and more)

Stangnet Facilities Maint Tech... Er... Janitor

wonder how much it would cost to ship you a pair

there is enough sticking out to grab on to

there is enough sticking out to grab on to

lube between the nut and the face. I know my lubes

Stangnet Facilities Maint Tech... Er... Janitor

there is enough sticking out to grab on to

Attachments

there is enough sticking out to grab on to

Stangnet Facilities Maint Tech... Er... Janitor

Stangnet Facilities Maint Tech... Er... Janitor

there is enough sticking out to grab on to

there is enough sticking out to grab on to

there is enough sticking out to grab on to

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