0411 swap now to 12586243 for flex fuel

[chevy052500hd]

yup, calibrations were identical to 0411, the e85 tables I had entered , and also turned on the enablers, but for some reason the PCM is ignoring them. I don't have the sensor as of yet, but figured the PCM would recognize it. So with that I am playing around with a cal from a tahoe that had e85 thinking that there is some buried enablers that aren't visable, as of yet haven't loaded it. I also noticed with this PCM it don't like lean cruise, from some reason after driving around for 20 minutes it kicks outta it, I disabled cat protection thinking that this was the problem, and maxed out all the values for cat protection and it still does it. I don't have a cat on right now, so wasn't concerned. Gotta play with the setting still.

[Aloicious]

yup, calibrations were identical to 0411, the e85 tables I had entered , and also turned on the enablers, but for some reason the PCM is ignoring them. I don't have the sensor as of yet, but figured the PCM would recognize it. So with that I am playing around with a cal from a tahoe that had e85 thinking that there is some buried enablers that aren't visable, as of yet haven't loaded it. I also noticed with this PCM it don't like lean cruise, from some reason after driving around for 20 minutes it kicks outta it, I disabled cat protection thinking that this was the problem, and maxed out all the values for cat protection and it still does it. I don't have a cat on right now, so wasn't concerned. Gotta play with the setting still.

sounds like you're making good progress, keep us updated on it.

[chevy052500hd]

Well got lean cruise to stay active, commanded a af of 15.5 to 16 netted me 2 more mpg on the highway. So now I am up to 22mpg, not to bad for 3.73 gears LOL. E85 stuff I think I have hit a dead end, posted the tune I am using in the Cax section maybe someone can dig out the enabler that I need. For now I will have to wait.

Later
Kurt

[stigmundfreud]

does anyone know if the 04 5.7ltr Monaro/GTO supports flex fuel? E85 isnt widely supported here in the UK yet, its all E10, but it is going to come in at some point...

[chevy052500hd]

It is quite possibly, you have it easier, because there are already some operating systems that have e85 from the factory, that should work with that motor, as long as it uses the 24x crank sensor you should be good to go, but you would need the flex fuel sensor and more than likely need bigger injectors, fuel pump probably will be big enough to support the extra fuel.

[stigmundfreud]

thanks, will wait to see what happens with the whole bio-fuel lark. We might end up re-opening the old coal pits to get coal derived petrol, time will tell!

[chevy052500hd]

Just to let anyone know that was following this thread, efilive has updated the calibrations to allow flex fuel options now on this OS system and others that contain e85 tables, just update to the lastest software. Thanks again efilive.

[nevinsb]

Thanks for the update on the e85!

Any idea which tables you have to update for the 24X crank sensor? This may be something I will have to tackle this summer.

[chevy052500hd]

didn't need to the vortec 4.3l use a 3x sensor. By using a cal outta 2004 s10 pcm it had the flex fuel tables in it and the proper crank sensor, but the area to turn on the flex fuel option wasn't available, now it is, thus ended my problem. The are already a few 24x flex fuel cals on holdencrazy. Hope that helps.

Kurt

[nevinsb]

That makes sense. I thought you found a factory tune that had the e85 tables enabled (Not just with values filled in). I was kind of curious how they got enough fuel since the stock injectors are only 19LB.

I have a 12576106 PCM in my truck, and I was going to go back to the 1220411 PCM because the pins for the coils aren't grounding (For individual coil packs). It was suggested by a couple of other people that I would need to update to the 24X crank ring in order for this to work.

You remember which tune you were going off of? I didn't see a 2004 S10 listed.