I say dont over boost your car man, just tune it to a point where u feel the engine dealing with ease with the tune, that way u run it all day at full load with no second thoughts. and plz do go with water/meth injection ur pistons will love u for the cooling
and u can really up the timing with that.

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed