kendrix

ok i have a 2007 vstar custom 650. of course the stock pipes suck. i want people to be aware that i am coming so i am looking to purchase some vance and hinds short shots . i want to know if i should be re jetting or am i ok to slap them on? if anyone has tried this let me know the results please. if i do not rejet what should i be looking for for problems with out re jetting? thanks in advance