im about to put an engine (1998 x16xe) into my corsa gsi. is it worth removing the egr thing or not? I understand that it recurculates exhaust gases back into the inlet. if so doesnt it raise the inlet temperature? which is obviously bad for performance. also ive been told it makes the inlet components of the engine very dirty. this must be bad as well? why is it there and what does it do? how do u remove it. HELP!!!