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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > M2 Exhaust Installed



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      02-27-2012, 10:48 AM   #1
woot335woot
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M2 Exhaust Installed

So I took a leap of faith and decided to give the M2 exhaust a try. To all the haters out there, let's remember, "Cars" are a subjective hobby and everyone has different preferences and tastes. I prefer to not spend $2000 on some steel piping when I can get, essentially, the same thing for 1/4 the price.

Some background on my car:
2008 335i Coupe
JB4 Map 1
DCI
Modified CDV
Stock DP's

Here's a rundown of my impressions...

THE BAD:
-The box it came in was torn up pretty good
-It was missing 2 nuts
-The aforementioned nuts didn't fit the supplied bolts

THE GOOD:
-The actual piping was very well packaged and blemish free
-The welds looked amazing
-The finish on the pipes, the flanges, the mufflers and the tips all looked GREAT!
-The exhaust fit PERFECTLY!
-About 20lbs lighter than stock

Initial Impressions:

After sourcing the nuts that were missing/didn't fit the supplied bolts, a very smooth install preceded. Everything fit perfectly and the tips sit even and snug (without touching the bumper). The only thing that wasn't perfect was the fitment above the PITA cross brace. After getting some washers to space the brace down about 1/4", there are no rattles, shakes, noises whatsoever!

On start up, I was greeted with a nice low grumble. After the wastegates closed, the sound was very similar to stock, although lower. Driving around like normal, the sound is very nice and smooth, again similar to stock, but a few DB's higher and a few octaves lower. Keep in mind, I still have stock DP's!

OVERALL:
I am very, VERY impressed with this exhaust; how it looks, how it fits, how it sounds and most importantly, how much it costs! For $500 bucks, you really can't beat this exhaust! Even the guys at the shop whose lift I was using were very impressed with the whole deal. My butt dyno feels a bit more low-end power and an overall smoother driving experience. I didn't expect a big jump in power, but the little I do feel mixed with the looks, sound and fit are well worth the purchase! I would definitely recommend this exhaust to anyone who wants the HKS style exhaust, without the HKS sticker shock. I'll chime back in, in a few weeks once it's been broken in and the sound matures.

Under car shot after install


I'll take some other pictures after work today, perhaps a sound clip as well!
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Last edited by woot335woot; 02-27-2012 at 10:58 AM.
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      02-27-2012, 11:48 AM   #2
Beemw335
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All I know abou the m2 exhaust is that its LOUD and drones...
Please let us know how it is after one week of daily driving.
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      02-27-2012, 11:55 AM   #3
woot335woot
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Quote:
Originally Posted by Beemw335 View Post
All I know abou the m2 exhaust is that its LOUD and drones...
Please let us know how it is after one week of daily driving.
It is DEFINITELY NOT loud and DOES NOT DRONE AT ALL! I just drove 120 miles on the freeway this morning and I couldn't even tell I had an exhaust on. You can only really hear it when you accelerate and even then, it's not that much louder than stock.

BUT, I have stock downpipes, so I don't know what it's like catless.
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      02-27-2012, 12:05 PM   #4
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Lol if its hardly louder than stock, then whats the point??
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      02-27-2012, 12:12 PM   #5
woot335woot
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Quote:
Originally Posted by Beemw335 View Post
Lol if its hardly louder than stock, then whats the point??
If you read the original post, I said; "On start up, I was greeted with a nice low grumble. After the wastegates closed, the sound was very similar to stock, although lower. Driving around like normal, the sound is very nice and smooth, again similar to stock, but a few DB's higher and a few octaves lower."

At idle and cruising it's similar to stock, but noticeably deeper and at WOT it's louder and much deeper. The sound is smooth and refined, hopefully I'll post up some sound clips later today.
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      02-27-2012, 12:41 PM   #6
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Quote:
Originally Posted by Beemw335 View Post
Lol if its hardly louder than stock, then whats the point??
That its lighter and less restrictive
and its only $500 shipped
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      02-27-2012, 12:42 PM   #7
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Congrats on the exhaust. If you are happy with the purchase than that is all that matters.
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      02-27-2012, 01:29 PM   #8
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great find and an ever better price...good job
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      02-27-2012, 01:38 PM   #9
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If u go catless, which you probably will, it will drone. Right now it's fine. Also if u live in a climate that sees Lots of rain and snow be prepared for rust. Metal used is sub par cheap. You live near Michigan where snow And ice is the norm And roads are treated with salt.
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      02-27-2012, 02:41 PM   #10
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Looks great!
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      02-27-2012, 07:24 PM   #11
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I just installed the topspeed m2 exhaust this weekend and I have aa downpipes and I can say after driving 150 miles that it doesn't drone when your crusing on the highway and sounds great at start up and sitting still while reving. However... When it's under load it sounds very similar to a non-vtec Honda with a big fart can on the back haha, I bought the exhaust knowing this and plan on replacing the resonators and mufflers with higher quality resonators for about 200 total, so $700 for a full exhaust isn't to shabby.
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      02-28-2012, 12:35 AM   #12
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Quote:
Originally Posted by cam_lg View Post
I just installed the topspeed m2 exhaust this weekend and I have aa downpipes and I can say after driving 150 miles that it doesn't drone when your crusing on the highway and sounds great at start up and sitting still while reving. However... When it's under load it sounds very similar to a non-vtec Honda with a big fart can on the back haha, I bought the exhaust knowing this and plan on replacing the resonators and mufflers with higher quality resonators for about 200 total, so $700 for a full exhaust isn't to shabby.
This is exactly what I did. Because when I installed mine thats how it sounded. With cats it might be a different story but cat less its civic loud and annoying. I have magna flow mufflers now and it did the trick.
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      02-28-2012, 02:42 AM   #13
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How do you magniflows sound?
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      02-29-2012, 01:51 AM   #14
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Quote:
Originally Posted by cam_lg
How do you magniflows sound?
Sounds good. Still has a deep throaty sound like stock but louder. I get compliments for what it sounds like. Might add resonators to make it extra quite don't need the extra attention.
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      02-29-2012, 11:36 AM   #15
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Wait for it to break in. It drones. And it's loud.
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      02-29-2012, 12:41 PM   #16
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Quote:
Originally Posted by cn555ic View Post
If u go catless, which you probably will, it will drone. Right now it's fine. Also if u live in a climate that sees Lots of rain and snow be prepared for rust. Metal used is sub par cheap. You live near Michigan where snow And ice is the norm And roads are treated with salt.
This is far from the truth, Sub par SS would be any 400 series. " ANY 300 SERIES PIPING WILL NOT RUST". It does not matter if it is 303,304 or 316 all of them will not rust.

The nickel in the steel is what makes it rust proof.

316 roughly %20 nickel
304 roughly %10 nickel
303 roughly %7 nickel

These grades were made for major industrial equipment and machinery. Exhaust systems will last many many years in the elements no matter which 300 series it is.

Now if the flanges or other parts are made of steel then thats a much different story.


I dont know why people pay 5-6x as much for incolnel exhaust as the sound it not different in any way. however they could say they paid $6,500 for incolnel exhaust lol. O but how could you forget it never rust's! its incolnel! ( something 303 SS could have done)



I dont blame people for paying for R&D as i would never buy this exhaust, much to raspy. I would pay for AE exhaust or maybe vangaurd. But vangaurd still rasps.



Quote:
Originally Posted by Brey335i View Post
Wait for it to break in. It drones. And it's loud.

+1
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      02-29-2012, 02:11 PM   #17
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Quote:
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Wait for it to break in. It drones. And it's loud.
Tru dat
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      04-27-2012, 09:02 AM   #18
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I love how people justify their expensive waste of money purchases and put down people that just want a nice upgrade for their cars and don't want to break the bank to do it.. it's steel, period. 2k+?? really for that.. no thanks.
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      04-27-2012, 09:34 AM   #19
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I give you credit for having the balls to try it. Good fine, I might give it a shot. $500 isn't bad at all. Subscribed and waiting for that video.
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      04-27-2012, 09:56 AM   #20
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Not bad, even better price. Let us know how it goes.

I still love the Bastuck exhaust w/ a set of mid-pipes.

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      04-27-2012, 06:34 PM   #21
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Quote:
Originally Posted by Manny_World View Post
I give you credit for having the balls to try it. Good fine, I might give it a shot. $500 isn't bad at all. Subscribed and waiting for that video.
Ya I haven't really had time to get a video...maybe this weekend. It's more than broken in and sounds sexual. I get compliments on it all the time.
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      04-27-2012, 11:30 PM   #22
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I've had my M2 exhaust on for ~5K miles and i dig it, particularly for $365 shipped. my comments on fitment are same as above, spot on. i agree that the hardware supplied is not awesome but seems to do the job for now. i have since rechecked the nuts and bolts and they are all still holding fine.

using cruise control on the highway there is no drone until you go uphill (engine under a bit more load) and it drones a little around 2K RPM. under 1/2 to full throttle it has good sound, not crazy loud but you definitely know it is there. i must admit i can identify with the thought that it sounds a little bit like a Honda but not annoying...i have stock DP's as well though. it emits a satisfying burble when coasting off throttle under light engine braking, you can breath on/off throttle and let it continue to growl as long as you like (yes, i am 41 years old and still do this).

the one thing i didn't like was the tips, i have an E90 so they stuck out pretty far since the exhaust is made for E92 and the single wall 4" looks pretty chintzy IMHO. i switched them out for a set of 4" double wall Cherry Bomb tips (lol) and powdercoated black. they are slash cut and i rotated slightly so they align with the contour of the bumper, i am happy with that aesthetic.
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