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propane V LPG...interesting difference 

 

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 Post subject: propane V LPG...interesting difference
Posted: Sun Apr 05, 2009 11:27 pm 
Getting Side Ways
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Location: G town
VIC, Australia

this is really just for people interested in LPG

just discovered something weird by chance

my last tank of gas was bought from supagas and was straight propane

ive just filled up from mobil and now there is a big difference in the A/F ratios im getting under load and at idle...im assuming that mobil sells a propane/butane mix

A/F ratios were measured in lambda :

------------supagas---------mobil
------------propane-------prop/but mix
idle----------1.05-------------.95
full load-------.85-------------.78

so as u can see its now much richer across the board....

my system is an impco L convertor and 200 mixer

why would this be the case?

 

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 Post subject: Re: propane V LPG...interesting difference
Posted: Mon Apr 06, 2009 2:06 pm 
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what did you notice with economy?

Ive used straight propane before and got less out of a tank 60-100kms but i normally use bp-gas.

Ive been told that whatever gas you use it should be from the same place if you can. help the computer know whats goin on or sum thin.

but back to propane i found it gives the car more ballz! but wont last as long

 

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soon to get: AU diff, upc 330mm brakes, Vapor LPG injection.

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 Post subject: Re: propane V LPG...interesting difference
Posted: Mon Apr 06, 2009 2:10 pm 
Getting Side Ways
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To make the most of propane you need to tune the car to make the most of it.
Its like putting 98RON petrol in a car tuned for 91RON.
ECU's will make some adjustments, but when you're talking LPG then the ECU isnt making any Fuel adjustments.

 

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 Post subject: Re: propane V LPG...interesting difference
Posted: Mon Apr 06, 2009 4:16 pm 
Getting Side Ways
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propane is the s**t!
high octane and usually well regulated.
awesome for forced induction or high compression

 

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 Post subject: Re: propane V LPG...interesting difference
Posted: Thu Apr 23, 2009 2:25 am 
Stock as a Rock
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Location: melbourne
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so where would someone go to fill their lpg tank with propane
cause i'd love to know.....
pm with location please

 

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 Post subject: Re: propane V LPG...interesting difference
Posted: Thu Apr 23, 2009 12:10 pm 
Getting Side Ways
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supagas.com.au :)
as said above, its fantastic for fordced induction, even in vapour form
could only imagine the results someone would get with straight propane injection!

 

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mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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 Post subject: Re: propane V LPG...interesting difference
Posted: Thu Apr 23, 2009 6:15 pm 
Getting Side Ways
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there's a few propane setups in the states on some big engine cars that run very well.

 

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