Intank V surge, some interesting points raised , all of which make some sense. I'm no engineer but over the past 10 years owning T6 powered cars I have made some amateur observations. Fuel starvation has been an historical issue in modded cars with low fuel levels. Walbro intanks were often seen to deliver surge characteristics and are often supplemented by a surge set up as a compromise/fail safe A few logical points make sense to me -an intank still must feed the surge tank. -the more variables between the tank and ignition offers more opportunity for component failure. -I am interested in Trana's point about cooking fuel due to location of surge tanks and it's impacts on fuels at high performance levels V a couple of quick pulls on a Dyno from normal operating temperature. Love to see some "facts"on this. The higher the fuel temp the noisier the pump on my surge set up gets, therefor you begin to question what is happening down the line I have an idiom " do what you always did you can only get what you always got" Hence tuners etc invest in R&D to build a better mouse trap. I think it's called progress, These engines and management have come such a long way. Chiptorque, APS et al had to start somewhere with modding capabilities.albeit now obsolete but was best available at a point in time