25th December 2016, 01:09 PM
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Senior Member
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Join Date: Jan 2014
Location: Belgrave, Australia
Posts: 803
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Wow, an S8 on LPG!
what system do you have?
Vapour injection or liquid injection?
I used to have a vapour ring (venturi constant supply) system on an old Commodore back in the day.
Was thoroughly unimpressed with it from a power perspective (the Commodore had a wheezy 3.3L L6 of ancient low power origin to start with), but it gave great economy! Especially at 12c (6p) per litre at the time (late 90's)!
I've never really considered it since as it always used to drop engine power.
The more modern systems (vapour injection) were less lossy, but with liquid injection comes a whole new ball game with engine power gains thanks to LPG's higher octane finally being fully utilised...
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Cheers
Marty
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Current:
2001 Audi S8 - Brilliant Black with Black interior, C5 RS6 rims (whenever I actually put them on...), Solar Sunroof, Tinted side and rear glass, RNS-D, Grom, Bose, clunky old phone in arm rest!
2002 Audi S8 - Project
Replacement head coming arrived  thanks to MJ
Silver with Black interior. All features as the '01, with the 'S' mode auto shifter. Dodgey rear tint (need to find a way to get rid of that).
Family:
2009 Volvo XC90 V8 R Design - has a louder more obnoxious exhaust than the S8, sounds great! Love this thing - Q7 was double the price, and certainly not double the car!
Sold:
1997 Audi A4 - Hamilton's Club Sport, Achat Grey (will miss the old girl)
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