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chudsy 09-12-2012 09:15 AM

Average MPG / US or UK calibrated
Hi Folks,
I'm new here with a recent purchase of a 2001 4.7 running on lpg.
I've just reset the existing overall MPG on the trip computer and was wondering what others have been getting from theirs and if anyone has any bad experience with a LPG conversion?
I did manage to get the real time MPG down to 6 this morning while giving it a little poke up a short steep hill :eek: !!!!
Also is the computer calibrated to US or UK gallons?

Frango100 09-12-2012 05:26 PM

Re: Average MPG / US or UK calibrated
I had seen this question before and there was never an answer on it as far as i remember.

GCUK 09-13-2012 03:12 AM

Re: Average MPG / US or UK calibrated
I asked it some time ago. Never got a definitive answer. Use the litres scale if you need to be sure.

Frango100 09-13-2012 05:37 AM

Re: Average MPG / US or UK calibrated
You should be able to calculate the MPG yourself using the consumption in Lt/100km setting in the EVIC. Make 2 calculations, one using US gallons and the other with UK gallons and then compare with the indication on the EVIC in MPG. Then you know if it is US or UK calibrated.

Martyp 09-13-2012 11:48 AM

Re: Average MPG / US or UK calibrated
Gas (LPG) belongs in the kitchen, not the trunk IMO. :lol:

I get 12.7MPG on mine going to work and back and 20MPG on a run to the track, where it gets about 1MPG. :cool:

Running FRP custom SCT tune has netted me 16.5MPG going to work and back and 24MPG on a run.

chudsy 09-13-2012 03:32 PM

Re: Average MPG / US or UK calibrated
That's pretty good mate, I just reset the mpg from the previous owner so I'll have to wait and see what happens but it's almost impossible to go anywhere without flooring it for the grin factor !!!
They run pretty good on the lpg as well. I've just run out so I'm on proper juice till I fill up but I'll give it a bit on the way to work in the morning to see if there's anything noticable power wise.
It was just good to beat my mates merc ml420 which could only get to 8mpg indicated when floored :)
Nice motor by the way.

chudsy 09-13-2012 03:49 PM

Re: Average MPG / US or UK calibrated
Just noticed in your sig that you've got the addco rear bar. Can you recommend anywhere in the UK to get one?

Martyp 09-16-2012 09:39 AM

Re: Average MPG / US or UK calibrated
Beating a ML420 CDI is damned good going. V8 diesels shift, suppose the ML is a much heavier car though. My dad has the ML320 (V6) which has 225HP / /232lb/ft and it doesn't feel anywhere near as perky as the Jeep which has little extra power bone stock really.

Funny thing is, the gas pedal on the ML is kinda spongy and you need to push it down a decent bit to get moving. He jumped in the Jeep to move it a week ago and I just heard him ripping the rears. He came in saying, I just about ended up in someone's house, how can you drive that thing without crashing it?!? :lol:

I've gotten bored of revving/flooring it, never really go about 2k anymore - the quiet range. Sure it makes a nice noise at idle but I'd still rather have the motor off and the radio on instead - Belinda Carlisle Vs. V8 - no fricking contest... :D

Addco bars can't be purchased over here as far as I know, I'd go to Summit Racing, seriously the best mail order parts company on the planet.

You can also pre-pay taxes/duty on the order before it ships to make it plain sailing now. Damn I love that company. :lol:

While you're there get the K&N FIPK Gen 2, for just an induction kit it sounds like you put an exhaust on the car - got loads of +ve comments when I fitted it 3 yr ago. Exhaust would be the next stage but I've grown tired of it now as its my DD again.

chudsy 09-17-2012 05:32 AM

Re: Average MPG / US or UK calibrated
Hi Marty,
It was a petrol V8 - pretty nippy tho.
I've nearly crashed going backwards as I wasn't used to it and gave it a blip and it took off like a mad thing!!!
Cheers for the link to Summit - I'll be going for a few changes shortly.
Was it yourself that mentioned a UK 4x4 place that stocked all of the Mopar fluids as I need to get some in the garage for a top up?

Martyp 09-17-2012 07:42 AM

Re: Average MPG / US or UK calibrated
Hi Paul,

Oooft, even more impressive.

LOL, yeah the throttle is highly responsive to really any movement. Took me a week to take of gently.

No worries, I've bought practically everything on my truck from them.

No wasn't me, must have been Aaron (stonecold) but I'd like to know of one!

StoneCold 10-18-2012 04:25 AM

Re: Average MPG / US or UK calibrated
Not me guv'. There is a London based company that you can get some fluids from, but mostly LSD additives. They also do loads of spare parts (new) much cheaper than the dealer.

All mopar fluids are from dealers here and to be honest, they're not that really any more expensive.

A few years back I used a XJ that was running LPG for a job I had at the time (motor auction foreman). Unfortunately, my employer sent me out to collect a car with a defective trailer (unknown to me). The end result was that me and said XJ, rolled and bounceed down the A9 three times, landing on the drivers side!

In response to MPG's, I can get 26mpg on a run and 1 when I stomp it lol!

chudsy 10-18-2012 12:37 PM

Re: Average MPG / US or UK calibrated
You were lucky there mate. The lpg is great - goes well and cost wise it works out as much as my van to run!
I'm asking so many questions as I hate getting a new motor with this much crap that can go wrong with it.
I know my van inside out and don't give a toss if anything goes wrong as I know I can fix it. I don't know what's normal behaviour for these beasties so still finding my feet.
I'm trying to figure out the in / out of gear clunk at the mo and want to know what's normal. We've got ne merc c350s in work so I'm not expecting that sort of refinement. I have spotted an identical V8 to mine down here so I might stalk him and see how his goes into gear!!!

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