5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
I'm going to make a couple upgrades to my 545i: I know I want to do the Dinan software upgrade: not sure which stage (I, II, or III) to do. I want the faster shifts and added performance. Any advice?
Also, I'm going to put an exhaust on it. Originally I was just planning on a Dinan after cat system for better sound, now I'm also thinking about the RPI, as it's cheaper. I also have read a number of threads stating how nice it is. Which one would you go with? RPI: cheaper and good sound, quality, and fit OR Dinan: good sound, quality, fit, and the dealer can order it and install (one stop shopping). So... Which would you go with and why??
If by new you mean it still has a warranty, then I would either wait until it runs out to do anything other than Dinan, or do Dinan now. That would be my main thought, the warranty. Stick with Dinan if your 545i is brand new or has a CPO warranty. Best of luck.
It's CPO black with Auburn interior: SMG, sport, premium, cold weather packages, HUD, Nav... pretty much every option but cooled seats, sat radio (pre-wired though), and homelink.
Has factory black M5 wheels, blacked out grill, and bright white angel eyes.
I'm super psyched; my 3rd BMW, but my first real perfomance one....
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