ok heres the break down , direct port is always safer than a single nozzle, but the lowest shot u can run on a direct port is a 110 shot on a fuel injected car because of fuel pressure and the fact u don't ever want to run a fuel jet smaller than 0.016 because anything smaller clogs up way to easy and if a fuel jet clogs up u can kiss that cylinder good bye, a website called robbie the robot has a good nitrous jet calculator also if u are 11 to 1 comp. run a big cam nitrous loves them , i recamend skunk 2 stage 2
pro's and lay your cam gears out 2 and 2 and u will lose a little low end but have a major gain after 4 grand. If u run a single nozzle 75 is high as i would go anything over that and u risk a single cylinder loading up and once again boom ive seen a 125 single nozzle but it made me cringe , but i would be dissapointed with a 50 shot though , and never just throw in the jets your kit says will put out ?? horsepower alway calculate it and remember only spray your nitrous when bottle pressure is between 900 and 950 cause that is where a a nitrous tune up based around that and your fuel pressure at wide open throttle anymore question just post i will check this thread again , i would go either with a 74 shot single or personally lean toward direct port its safer and way more of a rush when you come on a direct port kit its like flying out the barrel of a gun if u can hook the tires up