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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 > N55 e92 335i vs 335xi exhaust.



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      10-04-2012, 04:31 PM   #1
mashimarho
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N55 e92 335i vs 335xi exhaust.

Lastly,

Correct me if I'm wrong...
So, the 335xi has 2 cats. 335i has 1.*

I have catless dp. So, if I remove the one on the pipes, it should sound just like the 335i with catless dp.*

Getting it done tomorrow. Thanks.*
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      10-04-2012, 04:59 PM   #2
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So you have catless dp and getting rid of secondary cats tomorrow? Can you let me know if it makes a difference?
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      10-04-2012, 06:37 PM   #3
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xi has 2, i has none, atleast that what Ive read on here.
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      10-04-2012, 06:44 PM   #4
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Yes it will sound just like the I, it will also smell a little more, and I think you'll prolly save a couple lbs as well.
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      10-04-2012, 07:35 PM   #5
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Cool. Just wanted to make sure one last time, since I don't have a lift.
Gettin' it done.
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      10-04-2012, 07:41 PM   #6
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Post videos when done
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      10-04-2012, 08:49 PM   #7
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Quote:
Originally Posted by henry418 View Post
So you have catless dp and getting rid of secondary cats tomorrow? Can you let me know if it makes a difference?
+1
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      10-16-2012, 08:17 PM   #8
mashimarho
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My friend Phuoc (YODAIME) Says there is NOO difference on 335i and 335xi exhaust.
WTF
Which is it??!!
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      10-16-2012, 09:01 PM   #9
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2011 BMW 335i  [4.66]
The standard 335i exhaust has no secondary cats. The XI exhaust is different if it has secondary cats.
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      10-17-2012, 03:42 AM   #10
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Quote:
Originally Posted by mashimarho View Post
My friend Phuoc (YODAIME) Says there is NOO difference on 335i and 335xi exhaust.
WTF
Which is it??!!
That is incorrect!

Xi models have secundary cats... (E92 N55)
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      10-18-2012, 12:33 AM   #11
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N55 XI has cats in the downpipes and secondary cats. That makes 4. It is one piece from the DPs to the exhaust tips, and it is a tank.

I have a 2012 E92 stock one standing up on the garage if anyone wants a smoking deal on it.
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      03-29-2015, 10:47 PM   #12
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When getting your exhaust done did you find a definite answer to this?
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      03-30-2015, 01:25 AM   #13
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Quote:
Originally Posted by MFox
When getting your exhaust done did you find a definite answer to this?
XI = 2 Cats
I = 1 Cat
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      03-30-2015, 12:20 PM   #14
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Quote:
Originally Posted by MFox View Post
When getting your exhaust done did you find a definite answer to this?
I did, and it is correct.
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