Ok so ive been lookin at a few cai for my m3 s 5dr. My main concern is do i need the bypass valve so i dont suck water up into the intake? In earlier post some people have listed intakes for sale either on ebay or bomzracing or something. I have noticed that these cai's dont come with the bypass valve. How much of a nessesity is this? I really dont want to damage my motor being it only has 42k on it and its an 04. I like the fact that the one at bomzracing.com is only 80$ but what do you guys suggest i do please HELP....
P.S. Thanks you all have always been such a good help i love this site and dont know what i would do with out it ! BRIAN
P.S. Thanks you all have always been such a good help i love this site and dont know what i would do with out it ! BRIAN