IMPUL R33R

By changing to a larger fmic you can gain a little power on a dyno due to the way an intercooler works, it cools the intake charge thereby making the inlet charge more dense and containing more oxygen by volume. useually the power will increase because most systems are tuned RICH as a precaution so with the added oxygen you get a better burn in the cylinder. You wont always get more lag with a larger cooler either as it depends on the design of cooler wether it is a BAR & PLATE or TUBE & FIN. factory coolers are usually tube and fin design so charging to a larger bar and plate cooler can often reduce lag. It also depends on the length of the cooler piping and the diametre, keep the pipes as short as possible, usually 2.5in to the cooler (for average & mid size turbos) and then 3in from cooler to manifold as the denser air from the outlet of the cooler needs a larger diametre pipe to keep the air speed up, hope this helps.

Not 100% sure on what u mean by ram attatched to master cylinder but assume you meen the actuation rod for the m/cyl which is attatched to the clutch pedal. if that is the case you need to replace the master cylinder the leak you refer to is actually brake fluid leaking out of the rear seal of the master cylinder, that can be sourced from most brake shops eg Better Brakes etc.