how to identify a JDM or AUDM engine :D

[tRipitaka]

whats more powerful: a b18c or a b18c5?

which b18c are you referring to..

b18c5 is the US type R engine.. equivalent to our b18c7 (type R)

b18c is the engine code for both type R and sir (vtir equivalent) for jdm models..

and b18c2 is the vtir engine..