You wrote you had LPG in your 2.2 JTS Alfa. Could you write some more about it?
1. What kind of LPG injection system did you use (vapour or liquid)? What brand, model?
2. Did it use only LPG or it had to use both LPG and petrol at the same time?
2. Did you have any problems with the car/engine because of it?
I just bought my 159 2.2 JTS (Sedan) and, as I do quite a lot kilometers per month (2000+), I want to convert it to LPG but I find it trouble to find a suitable option.
I have used the BRC system with direct injection. If I understood correctly, system used benzine injectors as well. From the beginning there were the problems and I remember that I had to wait that BRC from Italy sends the new program.
The system was partially using also the benzine (simply to say, every 4th or 5th injection was benzine). I had to fill up benzine every 3-4-5 fill-ups of the LPG.
The car was having only problems due to very unskillful installation. For example, when i had to pick up the car after conversion, it had to go immediately back to service since there was gas odor in cabin. Then had few times heating up due to city ride combined with very poorly installed cooling (heating) water routing (ups, now am wondering was the system with liquid or vapor, since liquid does not need the heating
). they installed feed and scavenge route next to each other, just between the engine and inner wing white body, inclusive Schelne which was nicely, but persistently rubbing the neighboring other hose.
so, when my guarantee (both LPG and car's) expired, managed to find this 3.2JTS and changed the car!
think that JTS could be converted, just requires bit more skilled mechanic for installation. as I wrote here, Holland's company Vialle is producing state-of-the-art direct liquid phase injection system, unfortunately only for VW group's cars. from hardware everything is available, they just need to sit and do the software. PRINCE (alos from Holand) also offers system for 159, Gulietta and MiTo, unfortunately only for TBi engines.