Dinan are, by far, the weakest tune and yes, while they do warranty their work they are extremely overpriced for the money. There are thousands of N54 engines running around with JB4 and Cobb's without problems. Any tune you get will tax your components more (plugs, injectors & coils primarily) but with a Dinan you pay twice as much for half the fun of a cobb or JB4. I don;t like monkeying around under the hood so I went with a cobb. If I need to take the car in I plug it in, remove the run (10 minutes) and, voila, i;m done. Of course, I've also got downpipes, an FMIC, intake, Meth, Exhaust, a charge pipe and aftermarket DV's so, obviously, there is alot more going on but as was said above, talk with your SA and gauge how open they are.
BMWCCA Member 368765
2008 BMW 535iA | Cobb stg 2+ | FBO | Meth
Last edited by xclone; 11-01-2012 at 04:22 PM.