first hello to eveyone out there im in need of some help for a freind, he has got a 440 L reg motor which was running fine untill a few weeks ao the problem he tells me is that when from 0-45 mph he said its becomes a "bitch" missing and and choking but once it reaches around 45mph its fine, now before you say take it to a garage hes a single father of 3 and is on benifits so we thought we would give this a try and see can we fix it ourselves, thanks from two idiots who dont know much about mechanics & cars.