Hey kyle i to have a 3.8 problem, but i got mine a month ago.. and i havnt been using it in my cars, then i got my booster (from u guys) and i tried the 3.8 in it.. and it just stutters or doesnt go.. or i have to give it a push to get it going.. i tried it in my shen and it does the same thing.. is there a problem with it? or is it just typical for the 3,8.. im really mad cuz its tottally usless!