make up your mind about gas milage :P ive heard you say from 25-30+ mpg... either way you could get more milage with out it.
alot of people comment on how the xp is more top end. alot say its decent mid range but comes alive 4000-4500 and up. just something to think about when getting a cam.
the vs cam has been 11's with some rockers on it and ported heads. the xp just does not seem to perform at the track. parkers set up with the xp and fullsize intercooler with all boltons (stock heads) strugled to go 12.7 on a perfect weather/air day.
everybody says go for the xp because its bigger than the vs. but lift does not matter, the xp has more lift than the s1x but the s1x out performs it at the track with faster times. its not always about size, if you dont know how to work it, it dont do ****
im not saying the xp cam is a bad cam, but it ALWAYS gets recemended over other cams because its the big one and there is nothing really special about compared to other cams.
im just saying....