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CFECO · 11-01-2011, 05:43 PM

When running CNG or LPG the engine can be modified with a higher compression ratio or turbocharging ( watch out for high exhaust temps though), thereby making more HP, so a smaller engine may be possible, with a mpg increase.

11-01-2011, 05:43 PM	#37 (permalink)
CFECO CFECO Join Date: May 2008 Location: Vail, AZ. Posts: 552 X-Car - '11 Homemade 2+2 Velbly1 - '17 Toyota Camery XSE 90 day: 29 mpg (US) Velbly2 - '13 Toyota Tundra 90 day: 18.03 mpg (US) Thanks: 174 Thanked 60 Times in 56 Posts	When running CNG or LPG the engine can be modified with a higher compression ratio or turbocharging ( watch out for high exhaust temps though), thereby making more HP, so a smaller engine may be possible, with a mpg increase.