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Author Topic: lpg question  (Read 2497 times)

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mathewst

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lpg question
« on: 24 January 2011, 12:46:43 »
I am loking at putting lpg in the mig.
System is BRC with direct injection.
How much more lpg will the car consume?
Are there any recomendations on driving (two tanks lpg one petrol tank) or something similar?
Any advice is welcome
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omegod

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Re: lpg question
« Reply #1 on: 24 January 2011, 16:12:43 »
Mine uses around 10% more LPG than petrol, go for the biggest tank you can accomodate, mine is 80 litres but still leaves plenty of room.
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zirk

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Re: lpg question
« Reply #2 on: 24 January 2011, 16:58:55 »
Quote
Mine uses around 10% more LPG than petrol, go for the biggest tank you can accomodate, mine is 80 litres but still leaves plenty of room.

Same here, about 10% down on petrol, ie 30mpg on petrol, 27 mpg on gas.
« Last Edit: 24 January 2011, 16:59:42 by zirk »
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tunnie

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Re: lpg question
« Reply #3 on: 24 January 2011, 18:10:05 »
Your looking at 10-20% drop in mpg, on petrol i could easily hit 34mpg average, lpg, lucky to get 27, mostly i got 25.

But with LPG, mpg is not important, its pence per mile!
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cem_devecioglu

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Re: lpg question
« Reply #4 on: 24 January 2011, 20:34:09 »
Quote
I am loking at putting lpg in the mig.
System is BRC with direct injection.
How much more lpg will the car consume?
Are there any recomendations on driving (two tanks lpg one petrol tank) or something similar?
Any advice is welcome

if you are going to have it installed, never let them drill the manifold in situ.. and ask them to do every step of parameter tuning for sensors as written in the official installation guide ..  and before you go, be definitely sure of your all ignition components so car is trouble free initally..  and check/ or have it checked for error codes before installation starts..
« Last Edit: 24 January 2011, 20:37:20 by cem_devecioglu »
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tunnie

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Re: lpg question
« Reply #5 on: 25 January 2011, 11:05:25 »
Quote
Quote
I am loking at putting lpg in the mig.
System is BRC with direct injection.
How much more lpg will the car consume?
Are there any recomendations on driving (two tanks lpg one petrol tank) or something similar?
Any advice is welcome

if you are going to have it installed, never let them drill the manifold in situ.. and ask them to do every step of parameter tuning for sensors as written in the official installation guide ..  and before you go, be definitely sure of your all ignition components so car is trouble free initally..  and check/ or have it checked for error codes before installation starts..

Always a good question to ask the installer, just a few small holes can create a lot of crap for the engine to intake, these were taken when the injectors where drilled and tapped for mine:





As for tank size, the petrol one remains. The best solution is a 80L torpedo tank, but you do loose half the boot and ability to put anything through into the car. You could get a 55L donut tank and replace spare wheel, but range is limiting.

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cem_devecioglu

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Re: lpg question
« Reply #6 on: 25 January 2011, 11:17:47 »
2 weeks ago one mechanic friend showed me the particles he find in cylinder bore left from an LPG install .. I wish I had their piccies :o
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mathewst

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Re: lpg question
« Reply #7 on: 25 January 2011, 11:50:24 »
What systems do you have on your cars (the one I bought should be pretty good since it was the most expensive one?
Also Cem good idea about code checking before leaving the car to be lpg-ed
I have no idea about lpg installing.
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tunnie

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Re: lpg question
« Reply #8 on: 25 January 2011, 11:59:33 »
most of us who have done DIY went with Stag kit, given its been fitted to a number of members cars, between us we must have clocked up a lot of miles. I've done 20k trouble free on it
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mathewst

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Re: lpg question
« Reply #9 on: 25 January 2011, 13:09:32 »
Thanks Tunnie.
I saw a how to about instaling lpg, but here you cannot install it anywhere than in the authorised dealers cause you cannot have the car motted without lpg certificate  ( for which you have to get the papers from the dealers about kit and installation and then pay the state another 150 pounds  >:( )
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tunnie

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Re: lpg question
« Reply #10 on: 25 January 2011, 16:40:23 »
ah yes, paper work, that reminds me  :-X  ::)
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cem_devecioglu

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Re: lpg question
« Reply #11 on: 25 January 2011, 19:52:03 »
Quote
Thanks Tunnie.
I saw a how to about instaling lpg, but here you cannot install it anywhere than in the authorised dealers cause you cannot have the car motted without lpg certificate  ( for which you have to get the papers from the dealers about kit and installation and then pay the state another 150 pounds  >:( )

same problem,  different pirates  >:(

I must note , here most installers dont bother detailed tuning of parameters and preparing the map.. instead they load a default map/parameters previously installed on another car (same model of course).. which I doubt will give same results on every car.. of course new model lpg ecu's can compansate but not everytime..
« Last Edit: 25 January 2011, 19:57:40 by cem_devecioglu »
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Entwood

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Re: lpg question
« Reply #12 on: 25 January 2011, 20:08:12 »
I have the BRC Sequent 56 system fitted (professionaly done) and am exceedingly pleased with it.

Fuel costs have dropped from 25p/mile on petrol to 15p/mile on LPG .. a saving of 40% ... and that is over just under 3 years and 30,000 miles .. :)
« Last Edit: 25 January 2011, 20:09:08 by entwood »
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cem_devecioglu

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Re: lpg question
« Reply #13 on: 25 January 2011, 20:11:55 »
« Last Edit: 25 January 2011, 20:16:11 by cem_devecioglu »
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Entwood

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Re: lpg question
« Reply #14 on: 25 January 2011, 20:18:48 »
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