1 do i need a vafc is that the only way to tune a max properly i dont plan on playing with it just want to tune it once and get it right then leave it right for a while till i have more money for more mods if vfac is the only way to go by buyin gone which one do i need from ebay i know ebay but 550 is to much from apex right now

http://search.ebay.com/vafc_W0QQfrom...sPageNameZWLRS

i would just like to know wich one will do there a little cheeper there thanxs for the help just need to be guided in the right direction thanxs again

 

or how about this one thanxs again

http://cgi.ebay.com/ebaymotors/V-AFC...spagenameZWDVW

 

There are other ways to tune. 550 is steep, look harder.