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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Can someone explain to me the 3stage IM



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      04-14-2014, 11:06 AM   #1
ChrisCharcoalE92
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Can someone explain to me the 3stage IM

Im trying to understand if this mod is worth it and if i can even do it for my car...i have a 2008 328xi e92 6MT...how much is this mod and is the performance worth it? got the itch to do something to my car before shes to old lol

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      04-14-2014, 11:16 AM   #2
Nico87
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Check out this sticky: http://www.e90post.com/forums/showthread.php?t=37444 it has all the information you need.

Just installed the Three-Stage IM on my E92 328i. Definitely worth it, especially if you compliment it with a tune. Picked up mine used from a 128i for $475.
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      04-14-2014, 11:20 AM   #3
Delta0311
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Quote:
Originally Posted by ChrisCharcoalE92 View Post
Im trying to understand if this mod is worth it and if i can even do it for my car...i have a 2008 328xi e92 6MT...how much is this mod and is the performance worth it? got the itch to do something to my car before shes to old lol
Yes it is worth it. I had it on my old 328. Just make sure you get a tune once you get it otherwise it won't make much of a difference.
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      04-14-2014, 11:33 AM   #4
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Quote:
Originally Posted by ChrisCharcoalE92 View Post
Im trying to understand if this mod is worth it and if i can even do it for my car...i have a 2008 328xi e92 6MT...how much is this mod and is the performance worth it? got the itch to do something to my car before shes to old lol
Check your car specs, if your engine is SULEV then you already have a 3 stage IM.
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      04-14-2014, 11:36 AM   #5
Delta0311
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Quote:
Originally Posted by BostonPoke View Post
Check your car specs, if your engine is SULEV then you already have a 3 stage IM.
He's in NY so he most likely won't most of the SULEVs where out in the West Coast.
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      04-14-2014, 01:29 PM   #6
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Get your VIN # then look online to see you have an N52 or N51. If you have the N51 you already have the 3 stage intake manifold. Otherwise you can do the mod. I did it myself and it was one of the first relatively major mods I did to my car. That being said it took me longer than it should have, but it wasn't impossible. I got my new manifold used for $350 i believe and i think it was worth it. especially now that i got a tune after a year without one its fun to feel power increase more sharply at different rpm and the sound of the engine change when the different flaps open. and too old? look on r3v and look at some of the stupid ghetto s**t those people are doing to 30 year old cars.. the car will never be too old for a new intake manifold which is now a pretty much proven modification
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      04-14-2014, 10:33 PM   #7
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Quote:
Originally Posted by Delta0311 View Post
He's in NY so he most likely won't most of the SULEVs where out in the West Coast.
Isn't NY strict on emissions too? I thought there were SULEVs there also.
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      04-14-2014, 11:29 PM   #8
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I have the sulev too got it in Massachusetts. Pretty sure it's not that hard to find
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      04-15-2014, 05:08 AM   #9
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Quote:
Originally Posted by Love The Drive View Post
Isn't NY strict on emissions too? I thought there were SULEVs there also.
No ny is not as nuts as California
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      04-15-2014, 09:44 AM   #10
SDemetris
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Sulev cars are everywhere. I'm in PA and my mom's 328 is an N51
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      04-17-2014, 05:03 PM   #11
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Any recommendations on where to pick up a used 3-stage manifold?
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      04-17-2014, 07:55 PM   #12
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i called a salvage yard near my house and while they didnt have the part, they got it in within like 5 days
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      04-17-2014, 09:23 PM   #13
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Got mine from Florida through car-part.com
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      04-18-2014, 10:04 PM   #14
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the 3 stage IM is made with a stronger/heavier material (compare to my 06 325)
the sounds a little deeper than stock
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