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[ricardo1500]

Hi The Doctor
I am in Willenhall just round the corner and would be very interested in seeing/helping with your conversion....they do a 4 pot conversion for £550 which would be ideal for my 2.2 estate.  Any one else had any experience of these kits?
Rich

[Jay w]

I can't specifically reccomend a kit, but i have chosen a different ebay kit. Alternativefuelcompany on ebay. Also sells Polish kits like the AC kit. i'm told the AFC kit is a generation or two ahead. It doesnt rely on the lambda sensor for operation, it autocalibrates by watching the injectors entirely. (exact operation i'm not sure) and another interesting feature, it is a learning ECU so recalibrates continually to account for differences in conditions and engine/gas kit wear.

I have an Estate and i want the boot, so a 60L tank is going in the spare wheel well. FULL kit including tank is £650

the price does sound good, i paid £705 for mine with a 70l cylinder tank.
The AC system auto calibrates based upon lambda readings, there is an initial set up required which i would imagine all systems need to have, but in the past when i have looked at the mapping sometime later i have found that the curve is different to the one we originally created.

I could be wrong here but i was led to believe that LPg requires the injectors to be open for a longer duration due to the differences in the fuel, would this not be an issue if it is using the petrol injectors as its source?

i wouldn't mind betting that when you get down to it the kits are not a million miles apart from themselves
and anything that saves money cant be a bad thing  

[Kevin Wood]

The AC system auto calibrates based upon lambda readings, there is an initial set up required which i would imagine all systems need to have, but in the past when i have looked at the mapping sometime later i have found that the curve is different to the one we originally created.

Remember that the petrol ECU will have long term fuel trim values, probably individually for different parts of the fuel map, so if you don't get the calibration spot-on the fuel trim values will adjust to compensate. Then, if you run it on petrol for a while, they'll adjust back, so you can end up chasing your tail.

I could be wrong here but i was led to believe that LPg requires the injectors to be open for a longer duration due to the differences in the fuel, would this not be an issue if it is using the petrol injectors as its source?

Injector duration is purely down to how rapidly the fuel is delivered through the injector, which, for LPG, depends on the vapour pressure and temperature and the nozzle diameter. If the fuel delivery matches the petrol injectors then the duration will be the same, however, the LPG system will apply corrrections based on the above parameters so it may not stay the same under all conditions of speed and load.

i wouldn't mind betting that when you get down to it the kits are not a million miles apart from themselves
and anything that saves money cant be a bad thing  

Just looked on the ECU manufacturer's site and, give or take a few details it does look very similar to the AC unit.

Kevin