Esiest thing is to tghten all ur piping's rubber. If cannot, dismantle ur intercooler and suppress into water to check for bubbles. if alot comes out then throw away & go buy a trust intercooler (Joking).. Easiest way is to bring it to an experienced mech of radiator sifus..
Battery gets flattened after a few mins dash lights are going bright and dark is the some common problem where the wiring is shorting out any help would be great!!