generally yes. my rule of thumb is as the gas has less bang power a longer stroking engine suffers more from it, The IIA I had on lpg/gas was an utter pig at anything under 2k on the tacho when running on gas.
Ive had a few rides in LPG 3.9 v8 efi discos and next door to mine without dyno testing Id guess at maybe a 5% loss of power but with the cost of fuel on a similar trip being $40 for my petrol and $25 for the LPG disco Id take a 5% loss.
Dave
"In a Landrover the other car is your crumple zone."




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