[xiljustin]

I got some cosmetic work done to my new 2013 msport (335i) at an aftermarket shop, and when I went to go pick my car up the head guy told he'd build me a custom exhaust with magna flow. I've been looking for an upgrade at exhaust but I havent seen any magna flow type exhaust available on the aftermarket. Should I avoid this custom exhaust? Thoughts?

[RPM90]

Originally Posted by xiljustin

I got some cosmetic work done to my new 2013 msport (335i) at an aftermarket shop, and when I went to go pick my car up the head guy told he'd build me a custom exhaust with magna flow. I've been looking for an upgrade at exhaust but I havent seen any magna flow type exhaust available on the aftermarket. Should I avoid this custom exhaust? Thoughts?

No reason to avoid it as long as you like the sound of the system in the end, an the price is right.
As long as they do mandrel bends to keep all the curves smooth while maintaining the tubing diameter at those bends, then flow shouldn't be a problem compared to other systems.
As I said, the sound of the mufflers is what can make or break it as they will be the biggest determiner of the exhaust sound.

Which system are you looking to get?
On their website they show 2 setups.
One is "sport" and the other "touring".
Likely, sport will be the louder one, touring the quieter and likely less or no drone.

Keep in mind the whole "drone" thing. Racier freer flowing systems tend to drone at steady cruising speeds as they sacrifice quieter sound for best flow.
It's likely that the touring option will keep the sound quieter, perhaps damping or eliminating drone, sacrificing a bit of flow.
I HATE drone. It can get very exhausting on longer drives and can be quite annoying even on daily driving.

Make sure you can get some satisfaction guarantee so that if you don't like the system installed, the shop will correct the issue.
Perhaps they can install a resonator if there is too much drone.

BTW, why is he offering a "custom" build, seeing the Magnaflow offers a whole system for your car?

I think our stock exhaust tubing is 3", but I'm not positive on that.
Find the stock spec's to make sure you're getting the right tubing.
Are you going cat back or just axle back?
If our stock system does use 3" tubing, then going with just axle back with new mufflers will give you sportier sound.

I'm sure someone with more exact knowledge of our stock system will chime in.

[619beameup]

I just got mine put on last week and absolutly love the sound

[Chicken_Joe]

Originally Posted by RPM90

No reason to avoid it as long as you like the sound of the system in the end, an the price is right.
As long as they do mandrel bends to keep all the curves smooth while maintaining the tubing diameter at those bends, then flow shouldn't be a problem compared to other systems.
As I said, the sound of the mufflers is what can make or break it as they will be the biggest determiner of the exhaust sound.

Which system are you looking to get?
On their website they show 2 setups.
One is "sport" and the other "touring".
Likely, sport will be the louder one, touring the quieter and likely less or no drone.

Keep in mind the whole "drone" thing. Racier freer flowing systems tend to drone at steady cruising speeds as they sacrifice quieter sound for best flow.
It's likely that the touring option will keep the sound quieter, perhaps damping or eliminating drone, sacrificing a bit of flow.
I HATE drone. It can get very exhausting on longer drives and can be quite annoying even on daily driving.

Make sure you can get some satisfaction guarantee so that if you don't like the system installed, the shop will correct the issue.
Perhaps they can install a resonator if there is too much drone.

BTW, why is he offering a "custom" build, seeing the Magnaflow offers a whole system for your car?

I think our stock exhaust tubing is 3", but I'm not positive on that.
Find the stock spec's to make sure you're getting the right tubing.
Are you going cat back or just axle back?
If our stock system does use 3" tubing, then going with just axle back with new mufflers will give you sportier sound.

I'm sure someone with more exact knowledge of our stock system will chime in.

It's 3 inch outer diameter with a .065 wall

[STR8-6IX]

I'd go for a downpipe if you are looking for a good sound.

you'll get better gains, + the benefit of keeping your stock muffler to keep everything quiet when you arent on the throttle.