upgrades to my new 545i - BMW Forum

etip · 06-12-2010, 12:43 AM

Hello.
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??

Thanks for your input.
etip

Kai · 06-12-2010, 12:46 PM

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.

etip · 06-12-2010, 02:52 PM

It's got CPO on the car for another year. I guess it makes sense to go with Dinan for that reason. The price diff is only a couple hundred. Do the RPI and Dinan sound very different??

Kai · 06-12-2010, 04:20 PM

I don't believe I have ever heard either on a 545i. I'm sure you could do a youtube search and find some clips to get a general idea of the difference in sound.

etip · 06-12-2010, 09:20 PM

I went ahead and ordered the Dinan.
Thanks for the input.
E

Kai · 06-12-2010, 09:27 PM

No problem. I doubt you will be disappointed with it. Post some pictures of the ride.

etip · 06-12-2010, 09:37 PM

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....

bighorns · 06-12-2010, 10:02 PM

Very nice! I've always liked the 5 in black!

Kai · 06-13-2010, 12:58 AM

Very nice. Welcome to the Werkz.

denyo77 · 06-13-2010, 05:54 PM

wow, that looks stunning! Welcome aboard!

etip · 06-13-2010, 06:08 PM

Thanks for the warm welcome.
I'll post more pictures once I get the exhaust on.

etip · 06-23-2010, 09:53 PM

Got the exhaust and stage I done. Much quicker and more responsive. The exhaust sounds great; nice and deep, but not too loud (my wife did ask if I did something, 'cos it seems loud).