A cars fuel system need to be upgraded for turbo, how about if the car is a dual fuel, would something in the gas system need to be upgraded?

usualy a larger converter is needed, ive seen some high performance cars runnung 2 converters even.

there is a member on Fordforums (EZY10) who has a 10 second XF running a Gas Researh system
http://www.fullboost.com.au/feature_car ... Id=511&p=1

Gas Research website:
http://www.gasresearch.com.au/

impco parts work equally as well

yeah they do work well, i use an impco converter on my EB using only a mixer adaptor plate & Gastek electronic mixer controller and it actualy delivers just as much power on gas as it does petrol and very ecconomical.

i allso noticed that on the Gas Research site they state that their equipment isnt designed for boosted applications either. the EZY10 XF Falcon runs 2x B2 converters, and a 480cfm Gas Research mixer throttle body. needless to say it works quite well and as a point of intrest the throttle body has roughly the same internal diameter as the 68mm XF item.