The DSX Tuning Aux Pump Kit is the original and budget friendly alternative to big fuel supply with a simple installation.  There's no need to get inside of the factory fuel tank, as this system taps into the tank and uses an external pump that ties back into the factory feed line.  With the help of the factory fuel pressure control module, the ECM always knows what your fuel pressure is even when the aux pump kicks on to give a huge boost in pressure and flow.