Hey, I am considering putting a header on my 99 lude.... I can get a 4-1 DC header for pretty cheap, some people say this one is good, some say I shouldnt sacrafice the power down low for up-top power.... what I wanted to know was if anyone had a 4-1 and what they thought about them, and did they feel any gains at all w/o dyno tuning/v-afc? and will they make your car run even more rich by just putting them on? please let me know, thanks