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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Video - E92 N55, BMW Performance Exhaust + AR 4" Catless DP



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      08-26-2011, 01:13 PM   #1
CJ421
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Video - E92 N55, BMW Performance Exhaust + AR 4" Catless DP

Hey guys

I had my AR 4" Catless downpipe installed this week @ Helix Motorsports in Philly (www.helix13.com, Alex@Helix on E90Post). In addition I had a JB3 Stage 1 installed. A pleasure doing business with them, I had my BMW Performance Exhaust installed there in June too.

About the DP - it's gorgous, you can see some pics of this beauty here:
http://www.e90post.com/forums/showpo...6&postcount=27

The car is a total beast now. It's very loud, maybe 1.5-2x as loud as the BMW PE by itself. Almost as loud as a supercharged M3. You can see my original BMW PE video here (includes stock comparo):
http://www.e90post.com/forums/showthread.php?t=559948

With the catless downpipe, the turbo spools a lot faster and adds another dimension to the sound. You can hear the turbo spinning/whistling all the time, it's pretty neat.
It does smell since it's catless, very noticeable when you stop w/ the windows down. So just be aware of that before you do the catless DP.
There is no drone at all with this setup, it is quiet in the cabin. If you let off the gas, it's almost silent as well.

Edit: set video to 480P/720P for best sound, I did record it with a stereo mic.
Enjoy:

P.S. Took me a while to figure out the correct microphone placement.
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Last edited by CJ421; 08-26-2011 at 01:30 PM.
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      08-26-2011, 01:56 PM   #2
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Nice!!!!!!!!!!!!!
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      08-26-2011, 02:04 PM   #3
sA x sKy
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Holy shit, that is the best exhaust combo I have seen thus far!!!!!!

If I could justify the PE price, I would do it..but the price is $$$.
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      08-26-2011, 06:44 PM   #4
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Thanks guys, thanks Ian. The pops+burbles are mostly from the PE; there seem to be more pops with the DP in now and they're louder too.

I have an Olympus E-PL1 camera (micro 4/3) and this mic accessory:
https://us.buyolympus.com/external-m...tent=addtocart
I clipped it to the sunroof shade and shut the shade as much as possible, worked great, very little air moving up there.

Once you start moving you just want to keep laying into the gas, the sound is just so intoxicating.
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      08-26-2011, 09:06 PM   #5
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I can't wait to hear this in person. Makes me really want that AR DP even though I know I should focus on other mods first... like brakes....and suspension
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      08-26-2011, 09:11 PM   #6
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Hey CJ421,
Finally you got your DP installed! What a beuatiful noise....love it!
I believe you're going to do lots of WOT pulls! Hehe...
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      08-26-2011, 11:15 PM   #7
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luv the n55 sound!
nice work -
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      08-27-2011, 12:30 AM   #8
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Sounds awesome dude! Thanks for the vid.
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      08-28-2011, 11:33 AM   #9
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How much boost are you running with the stage 1 dp?
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      08-29-2011, 07:30 PM   #10
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Quote:
Originally Posted by turugara View Post
How much boost are you running with the stage 1 dp?
That I'm not sure, maybe you can decipher the info on this page:
http://www.burgertuning.com/jb3.htm
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      08-29-2011, 08:25 PM   #11
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SIck!!!
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      08-30-2011, 12:24 AM   #12
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Quote:
Originally Posted by CJ421 View Post
That I'm not sure, maybe you can decipher the info on this page:
http://www.burgertuning.com/jb3.htm
Are you going to the KOP this thursday? I really want to hear the DP's.
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      08-30-2011, 08:50 AM   #13
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Quote:
Originally Posted by turugara View Post
Are you going to the KOP this thursday? I really want to hear the DP's.
I'm planning to be there Steve, I'm not sure who else is going. I'm certain you'll hear my car long before you see it.
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      08-30-2011, 11:13 AM   #14
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New member here! I see you are from my area (though I'm really South Jersey). Looking to meet up with some local members and talk shop! Also looking for a good place in the area to get work done. Thanks in advance!
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      08-31-2011, 07:11 AM   #15
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Everything I've had done to my car mechanically has been @ Helix.

There's a meet this Thursday: http://www.e90post.com/forums/showth...531668&page=21
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