Omega Owners Forum - Name that LPG kit

Tezray

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Name that LPG kit
16. May 2011 at 13:23

Can anyone identify what LPG kit I have fitted to my car from this picture?? Unfortunately the sticker has been partially rubbed off (sorry it's upside down Sad

);

It's clearly an AC Stag 300 ??? Premium? Plus? Bog standard?

I would also very much appreciate if someone could tell me roughly how much this valve should be open on my tank... fully open? 1 turn? 2 turns?

I do need to get the cable to plug into the system and have a look at what it's up to as it's definately not running 100% right. Any info would be gratefully received Thumbs Up!

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amba Omega Baron Offline Posts: 2151 Medway towns Gender: Drives: 1998 2.5 Elite Auto saloon.Fitted with 3.0 cams and Irmscher Alloys.	Re: Name that LPG kit Reply #1 - 16. May 2011 at 13:37 Using my skills fo deduction,I would say....STAG..but that is the extent of my knowledge on anything LPG.
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amba Omega Baron Offline Posts: 2151 Medway towns Gender: Drives: 1998 2.5 Elite Auto saloon.Fitted with 3.0 cams and Irmscher Alloys.	Re: Name that LPG kit Reply #2 - 16. May 2011 at 13:40 Ops....sorry just read below the picture and you have identified it...should have gone to "spec savers"..sorry.
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Tezray

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Re: Name that LPG kit
Reply #3 - 16. May 2011 at 14:13

Haha yes unfortunately there are several variants of the Stag 300 kit, I should have made that more clear.

The more important question for me is how much to open this valve by, as i'm concerned that i'm either starving or flooding the system... the other concerning thing is that when I had the engine running the other day I completely shut off that valve and expected the car to switch back to petrol, but it kept on running on gas Shocked

Which I suppose suggests that the valve may be duff Roll Eyes

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Lazydocker Omega King Offline Victim of Pinky's Power Trip! Posts: 11336 Woodbridge, Suffolk Gender: Drives: 2003 3.2 Elite Estate LPG Converted, inspected and Certified	Re: Name that LPG kit Reply #4 - 16. May 2011 at 14:27 That's the standard STAG 300 kit. That valve should be fully open, it's just a manual shut off valve as backup. The reason it kept running is because of the fuel already in the lines
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: Name that LPG kit Reply #5 - 16. May 2011 at 15:09 looks like that ECU has been mounted upside down?
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Tezray

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Re: Name that LPG kit
Reply #6 - 16. May 2011 at 15:20

Lazydocker wrote on 16. May 2011 at 14:27:

That's the standard STAG 300 kit. That valve should be fully open, it's just a manual shut off valve as backup. The reason it kept running is because of the fuel already in the lines Wink

Thank you mate

What is the difference between the premium and the plus kit? Also, if I wind this valve back will it come to a stop or will it shoot out under pressure and release all of the gas in my tank Shocked

Because that's what i've been expecting to happen so i've only been opening it 1 to 2 turns! Will that be restricting the delivery of gas?

The ECU has indeed been mounted upside down... I think I may need a new filter as the power's not as good on gas and it doesn't idle fantastically either. I could really do with plugging into it and watching it run, but I don't have the Stag lead.

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Lazydocker Omega King Offline Victim of Pinky's Power Trip! Posts: 11336 Woodbridge, Suffolk Gender: Drives: 2003 3.2 Elite Estate LPG Converted, inspected and Certified	Re: Name that LPG kit Reply #7 - 16. May 2011 at 15:50 Should be mounted with the plug at the bottom If you can get along to the Bucks meet in a couple of weeks ~~I'll~~ we'll happily look it over for you and I'll have my laptop and lead with me
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Name that LPG kit Reply #8 - 16. May 2011 at 19:35 Full PDFs here http://www.ac.com.pl/en/ Stag 300 Plus adds 3D calibration map Stag 300 ISA2 adds ISA2 autocalibration (ISA2 seems to be just a F/W update from Stag 300 Plus) Stag 300 Premium adds OBDII calibration
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Albs Omega King Offline The upgrades are ongoing. Posts: 15083 North Essex Gender: Drives: 2000 2.5CD with LPG/Honda cbr600 FX	Re: Name that LPG kit Reply #9 - 16. May 2011 at 20:34 tunnie wrote on 16. May 2011 at 15:09: looks like that ECU has been mounted upside down? So should yours be. ........so should mine be, but currently it isnt.
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Tezray

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Re: Name that LPG kit
Reply #10 - 16. May 2011 at 20:51

Lazydocker wrote on 16. May 2011 at 15:50:

Should be mounted with the plug at the bottom Wink

If you can get along to the Bucks meet in a couple of weeks ~~I'll~~ we'll happily look it over for you and I'll have my laptop and lead with me Wink

Thank you mate i'll see if I can make it

Is there any reason why it should be mounted with the plug at the bottom? Is it to avoid water ingress into the ecu??

Thanks for your help guys, there's definately something wrong with my lpg kit i've covered a grand total of 74 miles and have burnt off around 23 litres of gas... 14.6 mpg mostly motorway Cry

my trip computer is saying 26mpg average and I reset it this morning!! It's probably cheaper to just run it on petrol at the moment Roll Eyes

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Lazydocker

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Re: Name that LPG kit
Reply #11 - 16. May 2011 at 21:00

Tezray wrote on 16. May 2011 at 20:51:

Lazydocker wrote on 16. May 2011 at 15:50:

Should be mounted with the plug at the bottom Wink

If you can get along to the Bucks meet in a couple of weeks ~~I'll~~ we'll happily look it over for you and I'll have my laptop and lead with me Wink

Thank you mate i'll see if I can make it

Is there any reason why it should be mounted with the plug at the bottom? Is it to avoid water ingress into the ecu??

Thanks for your help guys, there's definately something wrong with my lpg kit i've covered a grand total of 74 miles and have burnt off around 23 litres of gas... 14.6 mpg mostly motorway Cry

my trip computer is saying 26mpg average and I reset it this morning!! It's probably cheaper to just run it on petrol at the moment Roll Eyes

Answered your own question there Wink

Yep, I reckon that's probably burning more LPG than it would petrol Shocked

I assume you've done all the basic checks? And get all over the LPG pipes with the Mk 1 Nose and check for leaks Thumbs Up!

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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: Name that LPG kit Reply #12 - 16. May 2011 at 21:07 The worse I've ever managed over a tank is 16mpg, and that was trying
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Albs Omega King Offline The upgrades are ongoing. Posts: 15083 North Essex Gender: Drives: 2000 2.5CD with LPG/Honda cbr600 FX	Re: Name that LPG kit Reply #13 - 16. May 2011 at 21:12 TheBoy wrote on 16. May 2011 at 21:07: The best I've ever managed over a tank is 16mpg, and a pair of rear tyres, that was great fun Fixed that for you. .............
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Tezray

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Re: Name that LPG kit
Reply #14 - 16. May 2011 at 21:18

TheBoy wrote on 16. May 2011 at 21:07:

The worse I've ever managed over a tank is 16mpg, and that was trying Shocked

I think mine is uber poorly Sad

I've checked for leaks and tightened up all connections and I can't find any problems. I do think it is a fueling/mapping problem as the power & torque are much reduced when running on gas and the idle is quite lumpy especially when the engine's colder.

Should the stag ecu tap into my lambda probes? Or is that controlled by the injection pulses that are sent out by the engine ecu? As the wires for the lambda probes on the stag ecu are not connected... I may have just answered my own question again Cheesy

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