most people on here hate dinan because it's expensive without very strong results. however, the rational consensus is that they are very good products and very high quality... it's simply that they aren't the most cost effective. also, i'm guessing you are out of warranty in which case the dinan stuff doesn't really benefit you.
2005 Imola Red 330Ci ZHP- SOLD
2006 Sebring Silver S2000- SOLD :(
2007 Silver Gray M Coupe- SOLD :'(