How long is a “drive cycle” for ecu

[bankyf]

As the owner of an emissions station... If you don't have O2/O2 heater after 240 miles and multiple cold starts, it's your tune.

As a side note, Ford's suggested drive cycle is a good starting point, but often does not work.

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[SheepDog]

If you don't have O2/O2 heater after 240 miles and multiple cold starts

Even with long tubes and "high flow" cats?

 

[bankyf]

Even with long tubes and "high flow" cats?

I’m sure there some exceptions, but usually. Evap is absolutely by far the longest to get. Getting that before O2 heater is a strong indication to me that it’s likely not going to happen.

 

[SheepDog]

I’m sure there some exceptions, but usually. Evap is absolutely by far the longest to get. Getting that before O2 heater is a strong indication to me that it’s likely not going to happen.

Wengerd assures me that everything is active in my tune, but I've driven over 2,000 miles in varying conditions, tried the Ford procedure mentioned above (best I could anyway), installed rear O2 extenders, but nothing seems to work to get the O2 sensor, O2 Sensor heater, and catalyst to complete. Evap however, sets fairly quickly for me. Wondering if it has something to do with E85 and not letting the cats get hot enough? I have Gesi high flow (300 cell) cats, so maybe this is the issue.

Not a major concern for me at this point, as emissions aren't due on this car until 2029 but would still like to get it figured out before then.

 

[Wengerd Performance]

Wengerd assures me that everything is active in my tune, but I've driven over 2,000 miles in varying conditions, tried the Ford procedure mentioned above (best I could anyway), installed rear O2 extenders, but nothing seems to work to get the O2 sensor, O2 Sensor heater, and catalyst to complete. Evap however, sets fairly quickly for me. Wondering if it has something to do with E85 and not letting the cats get hot enough? I have Gesi high flow (300 cell) cats, so maybe this is the issue.

Not a major concern for me at this point, as emissions aren't due on this car until 2029 but would still like to get it figured out before then.

Send me another email brother

 

[SheepDog]

Send me another email brother

Always 1st class service and support. Thank you

 

[ice445]

Wengerd assures me that everything is active in my tune, but I've driven over 2,000 miles in varying conditions, tried the Ford procedure mentioned above (best I could anyway), installed rear O2 extenders, but nothing seems to work to get the O2 sensor, O2 Sensor heater, and catalyst to complete. Evap however, sets fairly quickly for me. Wondering if it has something to do with E85 and not letting the cats get hot enough? I have Gesi high flow (300 cell) cats, so maybe this is the issue.

Not a major concern for me at this point, as emissions aren't due on this car until 2029 but would still like to get it figured out before then.

I wonder if a bad flash can cause this sort of nonsense?

 

[NightmareMoon]

It helps to actually look at the ford drive cycle pdf because it says which steps are needed for catalyst, o2, etc.

It took me a long time to get everything to ready up, it really wanted that step where you drive 45-60 for like 20+ minutes. My normal daily driving would never trigger that so it took a few attempts to go drive that exact part. Last time I had this issue I was stuck ln a different step.

You can watch those codes on a good odb2 reader which saves you trips to the inspection place.

I have fewer mods, but I do run E85 with a tune, etc. Now I really really try to avoid changing my tune in the couple months before my inspection is due.

 

[SheepDog]

I wonder if a bad flash can cause this sort of nonsense?

Totally possible. Mr. Wengerd sent me a revision to try out, so I'll report back in a few days. Unsure what changes were made, but we shall see.

 

[SheepDog]

It helps to actually look at the ford drive cycle pdf because it says which steps are needed for catalyst, o2, etc.

It took me a long time to get everything to ready up, it really wanted that step where you drive 45-60 for like 20+ minutes. My normal daily driving would never trigger that so it took a few attempts to go drive that exact part. Last time I had this issue I was stuck ln a different step.

You can watch those codes on a good odb2 reader which saves you trips to the inspection place.

I have fewer mods, but I do run E85 with a tune, etc. Now I really really try to avoid changing my tune in the couple months before my inspection is due.

Yeah the 45-60 for 30 minutes is damn near impossible. Driving that slow on highways around here will insight a road rage shooting. It could just be that my cats aren't quite good enough (Might need to upgrade to the Gesi Gen2 EPA cats) but I'll give this new calibration a try first.

 

[NightmareMoon]

Yeah the 45-60 for 30 minutes is damn near impossible. Driving that slow on highways around here will insight a road rage shooting. It could just be that my cats aren't quite good enough (Might need to upgrade to the Gesi Gen2 EPA cats) but I'll give this new calibration a try first.

you need to kind just the right road. I've only found (1) surface street in my area with few enough lights to get significant time at those speeds. I don't think it has to be fully continuous uninterrupted (but i'm not 100% certain). the highways are all 75mph lol.

 

[AZHowln50]

Here is where I am at 400 miles after tune update with adaptions turned on. Have tried above process and a ford cycle pdf the best I could. I will try again tomorrow and if no luck reach out to tuner Monday.

 

[K4fxd]

I will try again tomorrow and if no luck reach out to tuner Monday.

It's possible you have a bad sensor. If you need to contact the tuner, ask him to log sensor operation to rule that out.

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