What size aftermarket fuel injector am I supposed to get for my 1997 Mazda Millenia V6 2.5L 170HP?

 

why? if you want to go faster, get a different car. i got news for you. the n/a motor is falsely rated at 170hp. it should be more like 140. the mc motor is rated at 210. and should be more like 230. dyno testing showed the n/a motor at 121hp with cai, chip, and some other useless things. mc motor was 193. enjoy.