vy vr running gas

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
yoda69
Posts: 1226
Joined: Sun Mar 15, 2009 12:20 am
cars: 2004 VYII Acclaim Wagon V6 Auto LPG/Petrol
2004 VYII Berlina sedan V6 Auto
2005 VZ Monaro CV8 manual
Location: Geelong, VIC

Re: vy vr running gas

Post by yoda69 »

No I don't have an xdf for the LPG. :thumbdown:
Tables are relatively easy to find, but scalars are rather tricky.
Basically uses the MAF and O2 sensors, and then has a PWM output for LPG flow control valve(FCV) from the PCM to control the LPG mixtures. NOTE: setup for a rich bias lpg system and will not work with a lean bias lpg system.
If I was ever doing LPG on a VY again would probably use vapour injection and a VT PCM with moates g6 adapter runnning 2 separate tunes, one for gas and one for petrol.

Yoda
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Tre-Cool
Posts: 533
Joined: Tue Oct 16, 2012 2:17 am
cars: VY SS UTE, VX Drag Car
Location: Perth

Re: vy vr running gas

Post by Tre-Cool »

digging up an old thread, but does anyone have a diagram or manual for how the vacuum lines are configured on the factory lpg systems. I have a vy with factory gas and suspect it's been played with in the past and want to make sure it's setup correctly.
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stevedarman
Posts: 109
Joined: Fri Mar 20, 2009 10:59 pm
cars: VX commodore

Re: vy vr running gas

Post by stevedarman »

Has anyone used the VT-VY PCM retuned to control LPG vapor injectors?
rather than using a LPG ECU, I would like to hear if anyone is running vapor injection on a delco PCM
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