map sensor

Another question for my turbo, do I need to get a 2 bar map sensor. And what exactly does it do?

3 bar http://www.hondata.com/3barinstall.html

a 2 bar wont cut it...i believe that is what your car comes w/ from the factory. You wont need a 3 bar unless you are running over 11psi. 3 bar is less than $100.00