Anybody like to weigh in on pro's and con's of high performance coils? I have a '02 E39 sport wagon would this improve my cars performance that much? The car has a bit over 165K. About to have my valve cover replaced so they will be right there for the changing. Looking forward to your comments. BTW Bavarian Autosport is having a sale on their brand of coils. Are other brands better? I have been using Castrol synthetic motor oil since Bavarian is having a sale on Ligui Moly is this a good choice? Thanks all.