Quote Originally Posted by 1SOL2NV
d15b=z6 they are both 1.6 ... the d15b is a 1.6 liter engine . it has a WAY more aggresive cam than the z6 ... the d15b head flows more even tho its the same casting . but set aside they are the same motor ... just one is imported and one was made in america . personally i would buy the d15b over the z6 anyday jus because of the cam

i think a reason why it is printed D15 is becuzz its a 1.5 liter block with an indenticle d16z6 head, with agressive cams...!