I know there is a notable drop in MPG when burning fart juice, but my Estate seems to be drinking the stuff.
On a careful run back from Bedfordshire tonight, mostly A roads, I got 22.7 mpg when I refilled. Coming back from the lakes, steady 70mph, I got just under 26mpg.
I know the 2.0 16v has never been the most economical beast but I would expect better than that, especially in manual form - I know on petrol it can easily exceed 35mpg on a motorway run.
Facts currently known about the LPG system -
- Injector nozzles bored to 2.5mm and system is calibrated
- Lambda operation is fine and gives 4.5v under heavy load and high revs
- Mapping, whilst possibly not 10000% spot on, is certainly not far off. And I'm under the impression this doesn't play a huge part when cruising carefully?
- LPG injector times - the LPG injector time on the software seems to be much higher than the petrol ones (I'm aware it should be a bit higher, but is nearly double)
- Very confident there are no leaks.
- Engine appears to be running fine and smooth, and not really down on power (as far as a 2.0 goes!)
I'm not expecting mirqcle MPG here, but I would have imagined if on a run on petrol it does 35mpg, it wouldn't be unreasonable to expect 28/29 on gas?
Interestingly, if I absolutely rag it around the city, it does 18mpg on gas which is higher than I'd expect - it's on a careful run the figures seem to be down.
Any thoughts much appreciated, I've not really checked anything yet
