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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 01-14-2011, 12:56 PM   #1
2003 325i
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Join Date: Mar 2009
Location: New Hamburg, Ontario, Canada
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My Ride: '03 Orient Blue 325i
My stock muffler vs ZHP

What's the difference? Is there one? Inlet/outlet size and #? Flow? Sound?

I'm considering it. Any info would be helpful.
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Old 01-14-2011, 01:37 PM   #2
Steven747
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Join Date: Aug 2010
Location: Orange County, CA
Posts: 4,379
My Ride: 05 330ci
please research you are going to get flammed for this!

yes im prety sure the piping is different but not 100% actually i believe 325 and 330 are the same but cant confirm please search there are over 50 threads on this
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Old 01-14-2011, 01:38 PM   #3
BusaNoob
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My Ride: AW 06 330ci ZHP
Look in you outlet and see if you have a flappy deal like this:



Zhp mufflers dont have this and they have a lower rumble to them.
Zhps are also dual in / dual out. If you have a single in, any decent muffler shop should be able to fit a y-pipe for you.

You are in luck actually because I have one for sale off my car !

Last edited by BusaNoob; 01-14-2011 at 01:40 PM.
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Old 01-14-2011, 01:58 PM   #4
Jim Murphy
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My Ride: 2006 E46 330Ci ZHP
+1
And don't forget to plug the vacuum line going to this "flappy" valve after you install the ZHP muffler.

Jim
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Old 01-14-2011, 03:23 PM   #5
Steven747
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Location: Orange County, CA
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My Ride: 05 330ci
Quote:
Originally Posted by BusaNoob View Post
Look in you outlet and see if you have a flappy deal like this:



Zhp mufflers dont have this and they have a lower rumble to them.
Zhps are also dual in / dual out. If you have a single in, any decent muffler shop should be able to fit a y-pipe for you.

You are in luck actually because I have one for sale off my car !

damm thats a nasty left pipe you got there id love to pick that stuff out
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Old 01-14-2011, 03:28 PM   #6
BusaNoob
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My Ride: AW 06 330ci ZHP
Thats not mine, I just used that pic to show the flap.

This is mine:
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Old 01-14-2011, 04:58 PM   #7
Nando779
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Location: Tucson, Az
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My Ride: 2003 325Ci
Good deal, I hear the ZHP exhaust is basically the BMW Performance exhaust. PM sent to seller.
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