Tuned1

I was wondering if there were any 545ers out there who have the Dinan Exhaust. I am going to do the Dinan Intake system, Throttle Body, and Stage 3 Software, but I am not sure if I want to do the exhaust. I like a good exhaust sound, but in this car I really want to make sure I don't have any boominess, Drone, etc at cruise. Ideally, I want the car to make a statement under throttle, but have no sound issues inside under normal driving conditions.

zen68

Search for "Dinan exhaust" under "Parts, Accessories and Mods", you'll find more answers than you'll ever need.

BTW, good choice on the intake, TB and stage3 SW. You'll love it

mookish

I have a 2004 545i SMG Sport, I have the Dinan exhaust and it's perfect, it makes a clear statement under throttle as you asked about. But when cruising, sometimes I forget that it's even there until I downshift. It's a perfect balance, when I'm sneaking in the house late, I just go easy on the throttle and no one will hear me pull up!

mhs525

It is a great exhaust with very good fitment and fantastic sound, deep, exotic car like. No Boom (what the hell is boom anyway?) and no drone (I know what that is).

If you don't love it I'll buy you a beer LOL

Howitzer

I think getting an RPI exhaust is a better value if you're going to pay the high price of a Dinan.

Tuned1

that's good to know...b/c my e34 with tri-Flow is not very sneaky

Tuned1

hmmm... that would be an expensive beer... can I get the Grolsch flip top?

Thanks for the info... good to know.

Tuned1

Have you heard the 2 side by side?

Tuned1

thanks, I will.
Do you know if I lose much in performance if I do the intake, TB, and Stage3, but keep stock exhaust rather than Dinan?

TakmaN

I would hope not! For how much the Dinan intake, throttle body and Stage 3 upgrade cost, I would imagine there has to be a gain. Most likely it won't be very noticeable, the majority being in the butt dyno. The V8s are pretty maxed out except for X amount of hp here and there with tuning, exhaust, etc. AFAIK, no aftermarket intakes have been shown to net gains on our cars except for the filter and RPi scoop combo but I could be wrong.

The RPI exhaust is awesome, hands down. They produce products that only produce gains, hence why they refuse to make a quad exhaust system. The RPi exhaust has a nice deep growl and no drone. There is a little hum on the highway but you won't notice it unless you are specifically listening for it. All in all I'm more than satisfied. I remember a post about a member wondering if it would be too loud since his car is a family hauler. He ended up buying it and said it didn't bother anyone at all.