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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 08-06-2011, 08:14 PM   #21
bigjae1976
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Maybe its just me...screeching sound aside...I think this exhaust is pretty loud with headers. But don't get me wrong, it sounds awesome.
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Old 08-06-2011, 08:51 PM   #22
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Maybe its just me...screeching sound aside...I think this exhaust is pretty loud with headers. But don't get me wrong, it sounds awesome.
yeah i just would rather a magnaflow growl and not the screetch. on mine its more of a sucking then screetch which dosent sound that sporty at all. i emailed magnaflow yesterday so they prob wont respond tell monday. if i dont have my magnaflow warranty card how can i get issued a new 1 just in case they want to see
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Old 08-08-2011, 09:10 PM   #23
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Indoor vid

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Old 08-08-2011, 09:12 PM   #24
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Indoor vid

what did you dyno without the headers?
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Old 08-08-2011, 10:50 PM   #25
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Awesome track video!
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Old 08-16-2011, 08:37 PM   #26
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I have some updated pictures for everyone.

My clamps didnt seem to be sitting well, and it was bugging me, so I took the magnaflow back off so I could take it to a local welder. While it was off the car I put my stock ZHP exhaust (with xpipe in place of the resonator) back on. Side by side:



Here are the welds, I think he did a great job



Now for pics of the middle support brace that everyone asks about. Here is the stock exhaust still mounted on the brace



Here are the rubber mounts after modification. They are reinforced with metal, so use a grinder. Also notice the washers I used to just give a slight bit more height. They are not really necessary. Its much more important to put washers/spacers between this brace and the vehicle, I had to use about 3/8" worth.



Here is the magnaflow attached to the brace, ready to be installed



Lastly a picture of the all important bracket that connects to the transmission. Re-installing this will greatly reduce the in-cabin noise of the exhaust



After going back to stock for 2 days, I really missed the sound of this exhaust system. Even with the headers it sounds great.
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Old 08-25-2011, 04:45 AM   #27
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cool pics, just wondering is this exhaust available for the 2.5 liter engine on the 2001 325i ?
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Old 08-25-2011, 11:30 AM   #28
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cool pics, just wondering is this exhaust available for the 2.5 liter engine on the 2001 325i ?

The Magnaflow #16533 is a perfect fit for your 2001 325i.


You'll really like it, Promise.


Good luck.
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Old 08-26-2011, 12:42 AM   #29
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The Magnaflow #16533 is a perfect fit for your 2001 325i.


You'll really like it, Promise.


Good luck.
Allright great I think I'm going to go for it!
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Old 08-26-2011, 12:55 AM   #30
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Same catback as mine, except I'm missing the front part that replaces our first muffler. Those C-clamps aren't great. I have an exhaust leak coming from the front section. Also, they sent me four 2 inch clamps by mistake, when two of them are supposed to be 2.25 (or 2.5 I don't remember). Surprisingly the crappy ones I got at hardware store are holding up better.
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Old 08-26-2011, 01:43 AM   #31
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Same catback as mine, except I'm missing the front part that replaces our first muffler. Those C-clamps aren't great. I have an exhaust leak coming from the front section. Also, they sent me four 2 inch clamps by mistake, when two of them are supposed to be 2.25 (or 2.5 I don't remember). Surprisingly the crappy ones I got at hardware store are holding up better.
You have a 325 right?
How do you like the exhaust so far?
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Old 08-31-2011, 03:49 PM   #32
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just ordered a magnaflow catback from performancepeddler super stoked on the price man thanks for your help with the wholesale login. I'll be installing it with bimmerbrake headers in a week or two. Im sure It will require some modification... but I can hardly wait to have this cost effective, BA sounding exhaust on my Xi. It will be paired with a GruppeM Cold Ram Air Intake, talk about air flow

what do you guys think about installing it from the first resonator back?...
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Old 09-03-2011, 09:16 PM   #33
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I have a hunch that the forward resonator/muffler in the magnaflow cat-back gives it most of its growl tone.
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Old 09-06-2011, 10:09 AM   #34
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Lastly a picture of the all important bracket that connects to the transmission. Re-installing this will greatly reduce the in-cabin noise of the exhaust


Are you sure the brace would reduce the cabin noise? The exhaust does not look like it move once mounted. i would think it would introduce more noise since it would be moving with the transmission.
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Old 09-06-2011, 12:30 PM   #35
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In my experience the brace proved important. I first installed the cat-back without that brace and the in-cabin drone was pretty bad (enough that I was thinking how much $$ i could get back out of selling the exhaust!), and it would occasionally vibrate against my transmission mount. I believed I needed to re-install the brace to eliminate the occasional vibration, but thought the drone was just the nature of the beast. It turns out that installing the brace was enough to generate about 1/8" clearance between the exhaust and the transmission mount, eliminating the occasional vibration, and also unexpectedly greatly reduced the drone in the cabin.

And believe it or not, the brace really does keep the exhaust from moving around. It feels flimsy when its off the car, but once installed it locked those pipes in place real good.
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Old 09-08-2011, 11:38 PM   #36
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I'm considering this for my 325i, along with the Rogue Engineering IKON and the BMW Performance exhausts. Bang-for-the-buck wise, you get more for you money it seems with the Magnaflow system, but I am worried it might be too loud and/or ricey. I have listened to many different clips of different exhaust setups on youtube, and it doesn't seem like they fully capture the sound accurately. I don't have any plans to add headers, I am doing this mostly for sound...although I'm sure the Magnaflow flows better than the RE and BMW Performance simply because it replaces more than just the muffler. I'm really torn on which system to get, mainly because I'm worried I will get the Magnaflow and find that it is too loud or sounds too ricey and then I will be stuck with it. Or perhaps I am just over-analyzing this, lol.
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Old 09-09-2011, 05:58 AM   #37
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Quote:
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Are you sure the brace would reduce the cabin noise? The exhaust does not look like it move once mounted. i would think it would introduce more noise since it would be moving with the transmission.
You should use the brace since it keeps the exhaust connected to the drivetrain. Otherwise, you'd be putting stress on your headers and the exhaust header flange. When you shift, accelerate or brake, the drivetrain shifts slightly.

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I'm really torn on which system to get, mainly because I'm worried I will get the Magnaflow and find that it is too loud or sounds too ricey and then I will be stuck with it. Or perhaps I am just over-analyzing this, lol.
The magnaflow is the total opposite of rice. If anything, its a little too deep. I've only gotten positive comments from other auto enthusiasts.

For me, its a little loud though. Not too bad but it definitely affects the sound of my high end audio system.

Last edited by bigjae1976; 09-09-2011 at 06:01 AM.
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Old 09-09-2011, 09:01 AM   #38
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bigjae, thanks for the reply. I noticed you have headers with your setup, so for me it would not be near as loud since I'm not pairing it with headers (I'm assuming).
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Old 09-09-2011, 02:46 PM   #39
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correct. I think my s/c also adds some volume.
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Old 09-09-2011, 04:21 PM   #40
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I have some updated pictures for everyone.

My clamps didnt seem to be sitting well, and it was bugging me, so I took the magnaflow back off so I could take it to a local welder. While it was off the car I put my stock ZHP exhaust (with xpipe in place of the resonator) back on. Side by side:



How did the x-pipe affect the zhp exhaust tone?
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