31-07-2013, 09:10 AM
^^^ Yeah what piggy said. I looked into it alot with my 6 and for a decent kit to fit myself was about £2000 but id never have to run on petrol.
The piggy back systems are a bit of a bodge (this is why you have to start on petrol) they just read the petrol signal and add about 10% longer injection duration to make the LPG injection. Because of the different ways LPG works at cold start it wont safely run on the petrols cold start enrichment map and also you have nothing to take advantage of the LPGs substantially higher octane rating.
I was looking at running it on stand alone management (£600 + mapping) Khlien injectors (not cheap) and a big tank (100l +) to give the same range as a standard tank. You cant fit a 60l tank and get the same range as itll never use the last 10L and you also use more LPG than you will petrol (due to the lower calorific value)
The piggy back systems are a bit of a bodge (this is why you have to start on petrol) they just read the petrol signal and add about 10% longer injection duration to make the LPG injection. Because of the different ways LPG works at cold start it wont safely run on the petrols cold start enrichment map and also you have nothing to take advantage of the LPGs substantially higher octane rating.
I was looking at running it on stand alone management (£600 + mapping) Khlien injectors (not cheap) and a big tank (100l +) to give the same range as a standard tank. You cant fit a 60l tank and get the same range as itll never use the last 10L and you also use more LPG than you will petrol (due to the lower calorific value)