how to set lean cruise

[bifster]

I read the post in the first thing there and nuthing in it helped me out at all as im a newb. I was poking through the tables today and noticed I could set a lean cruise and would really liek to as I do alot of cruising and not too much town stuff so it would save me at the pumps so if anyone could help me please give me all the info posible thanks

[Tordne]

The short version

Lean Cruise is ONLY available/possible on Holden/HSV vehicles. There is specific code in the Operating System that prohibits it from being activated on any other platform.

Preempting your next question... No the standard Operating Systems WILL NOT be modified to allow this function to be available on other platforms as it would make the modifier liable.

No the positive side if you are a EFILive Commercial or Workshop license owner then you can, with the version 3 or 5 Custom Operating systems use the B3647 Open Loop Fuel Table to command a leaner AFR at various RPM vs. MAP cells. This would basically require you to run in Speed Density mode (MAFless) and in Open Loop so that you command something other that stoich.

Hope that helps you some.

Cheers,

[neil]

What's the best settings for the Australian version after Lean Cruise has been turned on?

Regards,

Neil.

[Tordne]

Sorry, can't answer that one. I have had it disabled for over a year. I just use the Open Loop fuel table if I want to run lean.

[bifster]

O ok thanks. the only other thing i was thinking of doing was to lean the mixture out some across the etire table as i noticed running the car at about a 15.4:1 ratio it wrked really well and didnt smell at lights haha but anyways I guess ill have to get more seat time on the car and the software thanks

[joecar]

Yes, collect and analyze as many logs as you can, the more the better.

[limited cv8r]

You really need to modify the lean cruise table then check it with a wide band if you have one. There are other setting as well that you can play with like engage,disengage speeds and also time till engagement.

[Garry]

What range of B3647 could be set to a leaner value (which), without endangering the engine or cats? I checked some HSV setups, but their Lean Cruise entries didn't seem setup ...
Like, e.g., 1200-3000 RPM & MAP through 30, with 15.4 or so ... !?

[ringram]

If you use lean cruise Id keep the cells the same but shoot for 15.4:1 in those cells thats the most economic according to a few graphs and docs Ive read.
Any leaner and power drops more than economy rises etc.
Same goes for B3647

Cats die from rich mixes, I dont think lean hurts them much, if at all.

[Garry]

If you use lean cruise Id keep the cells the same but shoot for 15.4:1 in those cells thats the most economic according to a few graphs and docs Ive read.

... which would be?

Cruising on the Autobahn, I usually run around 85@1800 in 6th ...