$OD Lean Cruise

[EagleMark]

Well the files are there, numbers and locations would have to be changed. But that is beyond me?

I think what is does is fine though. Here's a look at XDF paramaters. 30 MPH IS TO LOW!!!

[Fast355]

Well the files are there, numbers and locations would have to be changed. But that is beyond me?

I think what is does is fine though. Here's a look at XDF paramaters. 30 MPH IS TO LOW!!!

I have used 25-30 mph for lean cruise for years. Plenty of times you are in 2nd or 3rd gear with the converter locked at no load in traffic where you are wasting fuel.

$OD can have the parameters reworked to run in a lean cruise like mode that actually works quite well. I used it with my TPI setup on my 305 Vortec. 20-21 mpg in a 5,500 lbs brick cruising 70-75 mph. Just make sure your VE tables are really dialed in before you try the open loop cruise.

[EagleMark]

There was a guy here trying to get $0D to lean cruise, but never had luck getting it dialed in?

On my $42, it's not a tweak, but actual Lean Cruise, never had luck at 20 to 30 MPH, had to set MAP to low so load would kick it off. Then on highway MAP was to low for slight hills. I settled for 40 MPH, no issues on highway and it covers most of my non highway driving here.

[trlrider]

To invoke a old thread, but did anyone ever get Lean Cruise to work in a $0D or $E6??

[444]

I haven't played with it yet but there is the open loop afr vs temp vs vacuum table and the associated qualifiers that look like you could setup to open loop lean cruise. The description says it can also be used in closed loop mode but I'm curious as to what happens if you do that and the computer is calling for 16:1 closed loop afr with a narrowband o2 sensor.

[trlrider]

I haven't played with it yet but there is the open loop afr vs temp vs vacuum table and the associated qualifiers that look like you could setup to open loop lean cruise. The description says it can also be used in closed loop mode but I'm curious as to what happens if you do that and the computer is calling for 16:1 closed loop afr with a narrowband o2 sensor.

Interesting! Thanks for pointing that out. That will be another notebook once I finally get this truck running well without the added tweaks. Eventually it will be making some long highway runs out of state and the added fuel mileage would be a huge bonus.
Learning as I go and trying to contribute when I can based on what I have learned.

[Fast355]

Interesting! Thanks for pointing that out. That will be another notebook once I finally get this truck running well without the added tweaks. Eventually it will be making some long highway runs out of state and the added fuel mileage would be a huge bonus.
Learning as I go and trying to contribute when I can based on what I have learned.

From memory from playing with the AFR lockup table eons ago, the PCM disables fuel trims when the air/fuel ratio commanded is different than stoich. I had the lookup tables enabled and the BLMs or INTs never moved.

[Turnshredder]

I haven't played with it yet but there is the open loop afr vs temp vs vacuum table and the associated qualifiers that look like you could setup to open loop lean cruise. The description says it can also be used in closed loop mode but I'm curious as to what happens if you do that and the computer is calling for 16:1 closed loop afr with a narrowband o2 sensor.

I never got it to work always goes to 14.7, I don't see how a narrow band sensor could read much different, I messed with all the qualifiers and tables.