Need help with 2018 Coyote Gen3 5.0 tune

[coach36]

Hello,
I have a 2018 Coyote Gen3 5.0 with an MT-82 6 speed in a kit car. The engine runs ok but needs a tune. I am fresh to this and I need some help here. Here the overview:

- Open K&N
- Straight headers
- IMRC intake flaps deleted
- Open exhaust (side pipes)
- 91 oct
- Cat's and so 2 O2's after cat deleted
- EVAP deleted

The engine runs ok but logically runs lean. This is what I'm not sure with:

1) where/how to tell the computer not to look for the cat and those after cat O2's?
2) the MAF sits almost in the same place like oem. Is there a way to calibrate this? How and where?
3) rich/lean: is there a way to run a self learning session to achieve a basic air/fuel map? How?
4) how to adjust maximum RPM?

Thanks in advance

[Plimmer]

1) where/how to tell the computer not to look for the cat and those after cat O2's?
Fuel-Oxygen Sensors-Downstream-Rear config-None
Also Heaters S2=0
Engine Diag- probably need to change CEL for secondary O2's

2) the MAF sits almost in the same place like oem. Is there a way to calibrate this? How and where?
Airflow General-MAF Calibration-Airflow vs Period. Then log trims to figure out adjustments needed.

3) rich/lean: is there a way to run a self learning session to achieve a basic air/fuel map? How?
Coyote ECU normally runs in closed loop all the time. It will target the lambda values shown on fueling tabs.

4) how to adjust maximum RPM?
Fuel-Cut off tab. The one you want is under Temperature Based Cut Off

[K44]

With the EPA crack down do you think it wise to publicly tell someone how to defeat emission control devises?

I for one would like HP tuners to stick around without the EPA making them not allow these kinds of changes.

Please delete your post.

[Plimmer]

He has a kit car, don"t think the EPA will be wasting their time trying to police his little 5.0 emissions

[coach36]

With the EPA crack down do you think it wise to publicly tell someone how to defeat emission control devises?

I for one would like HP tuners to stick around without the EPA making them not allow these kinds of changes.

Please delete your post.

Gee...
Plimmer got it right. An SB100 makes this legal.

[K44]

The EPA is not worried about 1 car but they might come after HP for it allowing a tuner the ability to turn off emission controls.

Just like the way they have gone after header manufactures and tune shops.....

[decipha]

EPA cant go after HP since they dont tune cars i.e. they aren't defeating emissions.

[K44]

EPA cant go after HP since they dont tune cars i.e. they aren't defeating emissions.

I didn't think they could stop manufacturers from selling test pipes or off road headers either.

Hopefully it's a non issue but each time I download a new beta I wonder if some tables will be missing.

[coach36]

Thx Plimmer
OK, i noticed that the cat protection (torque reduction) is set to 1.10. Do you see the need for it when there are no cat's anymore?

I checked on MIL lights. Are the after cat O2's named 'Bank2'? If so, can I opt all bank2's out?

There is a tap for traction control (airmass multiplier: 30%). Do you see the need to change this since i don't have a TC?

In the IMRC tab>optimum stability... do you see the need to set threshold and hysteresis to 0, just like it's set in transiant performance and optimum power, since my IMRC flaps are permanently open?

Thanks in advance

[coach36]

1) where/how to tell the computer not to look for the cat and those after cat O2's?
Fuel-Oxygen Sensors-Downstream-Rear config-None
Also Heaters S2=0
Engine Diag- probably need to change CEL for secondary O2's

2) the MAF sits almost in the same place like oem. Is there a way to calibrate this? How and where?
Airflow General-MAF Calibration-Airflow vs Period. Then log trims to figure out adjustments needed.

3) rich/lean: is there a way to run a self learning session to achieve a basic air/fuel map? How?
Coyote ECU normally runs in closed loop all the time. It will target the lambda values shown on fueling tabs.

4) how to adjust maximum RPM?
Fuel-Cut off tab. The one you want is under Temperature Based Cut Off

Thx Plimmer
OK, i noticed that the cat protection (torque reduction) is set to 1.10. Do you see the need for it when there are no cat's anymore?

I checked on MIL lights. Are the after cat O2's named 'Bank2'? If so, can I opt all bank2's out?

There is a tap for traction control (airmass multiplier: 30%). Do you see the need to change this since i don't have a TC?

In the IMRC tab>optimum stability... do you see the need to set threshold and hysteresis to 0, just like it's set in transiant performance and optimum power, since my IMRC flaps are permanently open?

Thanks in advance

[Plimmer]

I would disable all the protections, there should be a “Disable” pull down. There are 3, cat, flange and O2 if I remember correctly.

It’s not bank 2, bank 1 and 2 refer to passenger side or driver side. It will be bank 1 sensor 2 and bank 2 sensor 2. Or something like that. Sorry, on iPad now, so can’t look it up at moment.

Don’t know much about TC, I usually turn it off in the car each time I start up. You could try change that, but don’t be surprised if the coyote tries something else to achieve traction control. Look in spark cut torque ratio and fuel cut torque ratio for TC and change both to prevent TC. That may do it.

For IMRC I think you would set the defaults to open for everything without changing any thresholds.

[coach36]

I would disable all the protections, there should be a “Disable” pull down. There are 3, cat, flange and O2 if I remember correctly.

It’s not bank 2, bank 1 and 2 refer to passenger side or driver side. It will be bank 1 sensor 2 and bank 2 sensor 2. Or something like that. Sorry, on iPad now, so can’t look it up at moment.

Don’t know much about TC, I usually turn it off in the car each time I start up. You could try change that, but don’t be surprised if the coyote tries something else to achieve traction control. Look in spark cut torque ratio and fuel cut torque ratio for TC and change both to prevent TC. That may do it.

For IMRC I think you would set the defaults to open for everything without changing any thresholds.

Hey Plimmer,
I've tried all the suggested settings and tested it today. At first it felt all way smoother and torque in low RPM's gained. Beyond 4500 a huge power loss though. If i would have to give that feel a number, I'd say 30% loss. I've uploaded the previous file and the problem was gone again. So which of those settings could be the trigger for that?
Other than that... i need a solid fuel map bad.

[coach36]

Don't know what this is, but since a better tune is on my 2018 Coyote 5.0 Gen3 (crate engine in kit car)- no more rumble down the gears. Turning on burble doesn't do anything.
Does anyone know what's going on?

[engineermike]

Spark only torque ratio under DFSO. Use something like 0.7. 1.0 will cut it all out.

[coach36]

Spark only torque ratio under DFSO. Use something like 0.7. 1.0 will cut it all out.

Wow, ok, thx.
I guess it can't hurt anything huh?
So is the 1.0 setting there deactivating the burble part, or is this preventing the more or less natural V8 rumble down the gears?

[engineermike]

Read up on Ford SAI torque reduction. The first fast-path method to reduce torque is by reducing spark timing. That table determines the torque reduction limit using spark timing. A value of 1.0 there and a value of 1.0 in the fuel cut tr table sends it straight to fuel cut on decel. Reducing spark only tr allows timing retard to be used initially for decel, so you get the pops.

[coach36]

Awesome.
Sorry, would you please point out where exactly i have to make these adjustments? Don't want to do this wrong.

[engineermike]

Ecm 33458 under DFSO. I’m using 0.8 there.

[coach36]

Great, thx. Done. I'll try this on the weekend.
So this will pop even the burble logic (44021) is disabled, or does this have to be enabled?

Sorry, but you seem to be extremely familiar with the settings for the gen3, and I am also confused with the IMRC settings. Hoping you can clear this up for me.
I deleted the IMRC (flaps open). I've read though that disabling it is not enough and settings have to be done. Is this correct?

[engineermike]

Correct on your first question. Burble logic disabled.

IMRC delete is a lot more work than it seems. I’d leave them functional if possible.