So its well accepted that the TMC box and Im guessin the G-Tech box is the same alters the signal to the factory boost gauge, also the factory gauge takes its reading differently to a traditional boost gauge which (Ithink) takes its reading from a vacume from the manifold.
I know Hippo has fitted a second boost gauge, has anyone else? Basically Im just trying to work out where/what you attach/fix the gauges line under the bonnet ie do you have to fit a T-piece into a existing vacume pipe?
Any advice would be welcomed, any pic's would be legendary