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Yortt wrote:

Dylan wrote:Don't give up mate, some company's are offering it as an upgrade in Australia. I'll dig around as well I've seen a YouTube video of an Aussie tune shop doing it. Showing the ethanol percentage on the HPT dashboard.

Dylan, I would be interested in having a look at the link for the you tube video if you can find it.

Speedy wrote:12587603 operating system (for 2004 P59 1mb) is used for dbw, dbc, with segments for flex fuel, 4l60e or 4l80e transmissions.

Yortt wrote:Antus, thanks for the response and the attachments I have already tested a 12216125 OS from a Tahoe.

I have already done some bench testing with 512kb PCM with the 12216125 operating system with a flex fuel sensor fed into blue 56, the logger read the ethanol content accurately all good, However when installed into an LS1 after migrating the commodore tables the vehicle started wobbled on and stalled.

I have also bench tested a VZ PCM which as far as I can see has the IAC drivers for the cable throttle are in the Australian VZ PCM, installed a 2004 GTO operating system 12587604 which is DBC, the logger did not read the ethanol content at all, it would appears the 12587604 does not have the ethanol active in the operating system even though it is in the VCM suite software..

It also appears while the USA guys have managed to get it working on their vehicles the indication is no reported Australian Commodores have been successful converted hence the post.

Dylan wrote:

Yortt wrote:

Dylan wrote:Don't give up mate, some company's are offering it as an upgrade in Australia. I'll dig around as well I've seen a YouTube video of an Aussie tune shop doing it. Showing the ethanol percentage on the HPT dashboard.

Dylan, I would be interested in having a look at the link for the you tube video if you can find it.

Mate I've let you down. I can't find the video but I know a little about it. The signal is sent back from the flex sensor via the knock sensor connection at the engine.

On the video they showed the reading on the HPT dashboard showing ethanol percentage varying with a simulated signal on the bench. Unfortunately I don't know what OS they were using.

antus wrote:This may not have it enabled, but its the right OS.

Most of the P59 OS have flex fuel ability.

ShorTuning wrote:It is possible to make it all work. The GTO OS 12587604 using a P59 PCM is going to be the most direct swap possible due to some of the weird quirks the Holden/GTO's had.

roughneck427 wrote:I posted the cax files on the EFI live forum in the cax file section to enable the FF on the 7604 OS and I posted the xdfs on LS1tech awhile back I use the same user name there.

Yortt wrote:Antus, thanks for the response and the attachments I have already tested a 12216125 OS from a Tahoe.

I have already done some bench testing with 512kb PCM with the 12216125 operating system with a flex fuel sensor fed into blue 56, the logger read the ethanol content accurately all good, However when installed into an LS1 after migrating the commodore tables the vehicle started wobbled on and stalled.

I have also bench tested a VZ PCM which as far as I can see has the IAC drivers for the cable throttle are in the Australian VZ PCM, installed a 2004 GTO operating system 12587604 which is DBC, the logger did not read the ethanol content at all, it would appears the 12587604 does not have the ethanol active in the operating system even though it is in the VCM suite software..

It also appears while the USA guys have managed to get it working on their vehicles the indication is no reported Australian Commodores have been successful converted hence the post.