Those who run LPG converted 2.2's

[hunker7]

Yes when upgrading power go for bigger injectors than rs2. 440cc I think is perfect for 350 to 380 bhp.

Also use a wideband lambda kit to help dial it in and don't set it too rich on gas at full power. 12.5:1 is plenty rich enough on lpg.

I'll keep that in mind. You will most likely have a PM from me when it comes to calibration.

[diesel des]

No problems

[doncecone]

I've converted RS2 spec S6 with 2xAC Stag AC-01, Hana Gold and AC Stag ECU. Car is rated 300 whp and 500NM. Run to redline on LPG. It has 2 probes in the LPG tank. Best idle is achieve drilling the iM close to the petrol injectors and using 8 cm extension which inject the LPG close to the petrol injectors.

[diesel des]

What injectors are you running?

[doncecone]

Hana Gold A+ at 1.4 bar.

[FabS6]

I have my s6 running on lpg... It is great. I did a month ago 1000km with only 68€ (0,66€/lpg litre) with a 300-320bhp 2.2t k2470. Engine bay image attached.

Unfortunately I am currently under a bad doubt if to keep my s6 and spend 2000€ to legalize it in Spain (still have Italian lic plates)... or to buy a fully equipped 2.5 AEL quattro a6, break the s6 to make the TDI with a S6 look (suspension and brakes included). It is so frustrating this doubt

[byd1380]

I would remove the restrictions and try calibrating it in. Should be fine.

Byd1380 on here also has a urs6 on lpg and uses Kme gold and magic jet on a volvo k24 turbo and is at about 350bhp. His only issue is his rs2 injectors being near max and causing issues.

Yeah, Des is correct with my setup here are some pics, the only issue I have is the RS2 injectors maxing out and the LPG having a wobble. Will hopefully head to 440cc's soon. Engine bay could do with a wash

[hunker7]

Can't wait to get LPG done now. I was thinking, what do people thing of placing LPG injectors under the inlet manifold somewhere, just to make it look cleaner?

[prj]

Yes when upgrading power go for bigger injectors than rs2. 440cc I think is perfect for 350 to 380 bhp.

Also use a wideband lambda kit to help dial it in and don't set it too rich on gas at full power. 12.5:1 is plenty rich enough on lpg.

Anything richer than lambda 0.9 is a bad idea on LPG.
It's gaseous, so you don't get any more knock resistance. All you get is higher EGT's after the lambda 0.9 point.

Hence why it's a horrible idea to run it without properly mapping on a turbo car, as all petrol cars are mapped to add fuel to keep the EGT's down, and by doing this with LPG you achieve the exact opposite.

[hunker7]

Anything richer than lambda 0.9 is a bad idea on LPG.
It's gaseous, so you don't get any more knock resistance. All you get is higher EGT's after the lambda 0.9 point.

Hence why it's a horrible idea to run it without properly mapping on a turbo car, as all petrol cars are mapped to add fuel to keep the EGT's down, and by doing this with LPG you achieve the exact opposite.

This will be problem for me, while I can do all the fitting etc, I have no idea about setting it up etc. I don't know if it's something you could help me with?

[diesel des]

It's easy enough with a wideband lambda kit and motronic. As motronic is open loop at wot yiu can trim the fueling so it isn't too rich on gas at high loads buts it's fine in closed loop loads so motronic is happy.

[hunker7]

It's easy enough with a wideband lambda kit and motronic. As motronic is open loop at wot yiu can trim the fueling so it isn't too rich on gas at high loads buts it's fine in closed loop loads so motronic is happy.

Any recommendation for wideband lambda kit?

[diesel des]

http://www.wbo2.com/2j/default.htm

Along with a la1 display is what I use.

[hunker7]

http://www.wbo2.com/2j/default.htm

Along with a la1 display is what I use.

That makes things much more expensive

[diesel des]

There are probably cheaper ones but I see a wide band kit as an investment. It's vital in any tuned car in my opinion.