Lean cruise on 04 GTO

[98ls1blackbird]

Has anyone heard of this? According to the GTO guys, this is a routine in the 04 GTO PCM only, that can be turned on. They have HP Tuners to turn it on with. Is this something that EFILive can do? I have EFILive v2 and my son has an 04 GTO, and dont know whether to buy a licence for my software or go with HP Tuners. Any help? Thanks.
John

[mistermike]

COS 3 is a better choice than lean cruise, IMHO. I tried LC on my 04 using some factory Holden settings and wasn't all that thrilled.

[stigmundfreud]

if you look at the 2004 Holden Monaro tune on holden crazy (stock tune) you will see lean cruise is disabled. EFILive you can see the table to enable it but you have to question why the stock tune had it disabled

[98ls1blackbird]

I'll check it out and try to figure out how to enable and disable it. Thanks

[gto_in_nc]

It was fun to play with, and I left it enabled, but it's nothing to write home about. I got a couple MPG gain and made it largely imperceptable. If I'm reading correctly, though, you have a '98 Trans Am, right? If so, no go; lean cruise is not available on US cars ('04 GTO still had Holden OS...)

[stigmundfreud]

I'll check it out and try to figure out how to enable and disable it. Thanks

from memory looking at it, it was vss triggered but out the box was set to something like 477kmh, the cars fast just not sure lean cruise at that speed will yeild any results ;)

[macca_779]

It was fun to play with, and I left it enabled, but it's nothing to write home about. I got a couple MPG gain and made it largely imperceptable. If I'm reading correctly, though, you have a '98 Trans Am, right? If so, no go; lean cruise is not available on US cars ('04 GTO still had Holden OS...)

Have a look in the tuning for economy section. There is a bit on lean cruise in there. I threw up the settings I use and get excellent results using them.

[gto_in_nc]

??? I'm confused. Anyhow, the settings you posted in the lean cruise thread over there is very similar to what I had settled on. Curious, though - what do you mean by "excellent results"?

[macca_779]

??? I'm confused. Anyhow, the settings you posted in the lean cruise thread over there is very similar to what I had settled on. Curious, though - what do you mean by "excellent results"?

Excellent results as in an average of 11.3L/100km, compared to 14.4 pre tuned. Thats on a mates car with 3.46's. On my car I use OS5 and hence utilise b3647 to command my cruising AFR's. I don't get quite that good but its close.

[98ls1blackbird]

It was fun to play with, and I left it enabled, but it's nothing to write home about. I got a couple MPG gain and made it largely imperceptable. If I'm reading correctly, though, you have a '98 Trans Am, right? If so, no go; lean cruise is not available on US cars ('04 GTO still had Holden OS...)

No, its not for my car, my son has an 04 GTO and he was wondering about it.

[gto_in_nc]

<sharpens pencil>

So roughly going from 16.3 MPG to 20.8 MPG? That's a significant change, I think! At about 80 MPH (~130kph), I'm seeing an increase from around 24 MPG (9.8L/100km) to around 27 MPG (8.7L/100km) with my stock '04 GTO (think Monaro.)

Of course, that has all changed since the installation of heads and cam a few days ago! :D

[gto_in_nc]

No, its not for my car, my son has an 04 GTO and he was wondering about it.

Ah!

Yes, the '04 GTO can run Lean Cruise and, yes, it works. Does you sone have a wideband O2 sensor? I wouldn't touch Lean Cruise unless a WO2 is functioning AND VE has been dialed in first...

[98ls1blackbird]

Ah!

Yes, the '04 GTO can run Lean Cruise and, yes, it works. Does you sone have a wideband O2 sensor? I wouldn't touch Lean Cruise unless a WO2 is functioning AND VE has been dialed in first...

He does not have a wideband o2, but I do. I'll let him know that it will take some tuning to make it work. Thanks.