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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 07-17-2009, 08:07 PM   #1
b/\/\w STREETS
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M54b30 intake manifold swap into m52tu

My 2000 bmw 323i m52tu got an intake manifold swap. Got the intake manifold from 2004 bmw 330i m54b30.
Parts need just to complete the swap are:
1-intake manifold m54b30
2-m54b30 disa valve
3- turner motorsports m50/54 throttle body adapter plate


Parts I change while I was in there:
Two hard plastic bypass tubes
One bypass hose
fuel injector o rings
throttle body gasket
intake manifold gasket
all vacuum hoses
CRANKCASE-VENTILATION/OIL SEPARATOR
All the vent pipes/hose that go with it
Also many other misc items:
coolant, water wetter, carb/ throttle body cleaner, engine degreaser, seafoam, and seafoam deep creep

My 323i has 120,xxx miles on it. If the stock hoses/pipes have lasted this long, its good for another 120,xxx.

Now what has to be modified to make this work?
Your throttle body has to be grinded on the top right to be able to clear the idle air control valve
Only two of the four throttle body bolts are used
Also the bracket that holds all the wiring will not bolt back on due to the turner plate. The turner plate moves the throttle body forward causing this problem. (no biggie)
You have to adjust your throttle body cable to be able to open complete at full throttle.

I pretty much just flushed my coolant, cleaned my engine very detailed and cleaned the m54b30 manifold completely.The swap is straight forward, everything is reused again or could be replace with new parts. The m54b30 intake manifold itself is bigger and has longer runners than the m52tu. The first 80-100 miles the car seems to adapt itself to more air flow. The difference is completely different at all rpms. The car just revs freely all the way to redline, no more choking.Well worth the 8 hrs of work and about $400 spent in everything.Any questions feel free to ask


Ps: activ3 the intake ports on the head are D shaped. The port on a stock m52tu are oval and the ports on the m54b30 are D shaped
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Old 07-17-2009, 08:20 PM   #2
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wow...continue to update us. do you think you will do a DYNO?
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Old 07-17-2009, 08:25 PM   #3
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more to come
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Old 07-17-2009, 08:29 PM   #4
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Whats supposed to be the advantage of doing this?
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Old 07-17-2009, 09:31 PM   #5
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air flows easier into the engine making it breathe better making more power
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Old 07-17-2009, 10:33 PM   #6
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Where did you here about this swap at, i mean I'm not putting it down. I'm just a bit skeptical is all. i like numbers and facts. But i do find it really interesting.
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Old 07-18-2009, 12:00 AM   #7
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Quote:
Originally Posted by b/\/\w STREETS View Post
My 2000 bmw 323i m52tu got an intake manifold swap. Got the intake manifold from 2004 bmw 330i m54b30.
Parts need just to complete the swap are:
1-intake manifold m54b30
2-m54b30 disa valve
3- turner motorsports m50/54 throttle body adapter plate


Parts I change while I was in there:
Two hard plastic bypass tubes
One bypass hose
fuel injector o rings
throttle body gasket
intake manifold gasket
all vacuum hoses
CRANKCASE-VENTILATION/OIL SEPARATOR
All the vent pipes/hose that go with it
Also many other misc items:
coolant, water wetter, carb/ throttle body cleaner, engine degreaser, seafoam, and seafoam deep creep

My 323i has 120,xxx miles on it. If the stock hoses/pipes have lasted this long, its good for another 120,xxx.

Now what has to be modified to make this work?
Your throttle body has to be grinded on the top right to be able to clear the idle air control valve
Only two of the four throttle body bolts are used
Also the bracket that holds all the wiring will not bolt back on due to the turner plate. The turner plate moves the throttle body forward causing this problem. (no biggie)
You have to adjust your throttle body cable to be able to open complete at full throttle.

I pretty much just flushed my coolant, cleaned my engine very detailed and cleaned the m54b30 manifold completely.The swap is straight forward, everything is reused again or could be replace with new parts. The m54b30 intake manifold itself is bigger and has longer runners than the m52tu. The first 80-100 miles the car seems to adapt itself to more air flow. The difference is completely different at all rpms. The car just revs freely all the way to redline, no more choking.Well worth the 8 hrs of work and about $400 spent in everything.Any questions feel free to ask


Ps: activ3 the intake ports on the head are D shaped. The port on a stock m52tu are oval and the ports on the m54b30 are D shaped
Awesome. I'm doing the same, but with a B25 manifold instead. Where did you buy your hoses?
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Old 07-18-2009, 12:17 AM   #8
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Originally Posted by haplo_84 View Post
Whats supposed to be the advantage of doing this?
supposedly the hp gains are small, but there is a pretty decent jump in torque.
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Old 07-18-2009, 12:29 AM   #9
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I wonder what a bit of tuning with that and an exhaust and intake would do overall for it? You have any of those planned with it?
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Old 07-18-2009, 12:44 AM   #10
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supposedly the hp gains are small, but there is a pretty decent jump in torque.
I think it is the other way around and gains should be around 10whp at top end. I chose the B25 manifold because that is what the World Challenge Cars use. I think the B30's manifold is more geared towards torque.
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Old 07-18-2009, 01:56 AM   #11
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I think it is the other way around and gains should be around 10whp at top end. I chose the B25 manifold because that is what the World Challenge Cars use. I think the B30's manifold is more geared towards torque.
ya i was speaking of the b30 manifold. i would have to search for the thread but apparently turner stated that there was almost 20 tq gain going from a b25 manifold to a b30 manifold.
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Old 07-18-2009, 03:08 AM   #12
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I chose the B25 manifold because that is what the World Challenge Cars use. I think the B30's manifold is more geared towards torque.
Who told you that?

Every WC engine I've seen uses the B30 Manifold...heck I even bought one from a TMS engine.
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Old 07-18-2009, 09:15 AM   #13
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F**k
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Old 07-18-2009, 09:17 AM   #14
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Its not the end of the world man.
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Old 07-18-2009, 12:01 PM   #15
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Its not the end of the world man.
You're right. I just checked, there was NO GAIN going from a 325 manifold to a 330.

http://forum.e46fanatics.com/showpos...3&postcount=61

Apparently, Will Turner runs a 325 manifold and that is good enough for me.

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Old 07-18-2009, 12:07 PM   #16
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He would be one of the leading authorities in the tuning world of bmw's. Can't really argue to much, cause i have no where near the amout of knowledge that guy would have. My experince is mainly limited to japanese imports and and american iron. I'm working on the german end of it though.
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Old 07-18-2009, 07:54 PM   #17
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My 323i has e36 m3 ebay headers,gruppe m replica intake, uuc pulleys,custom exhaust , aa tuned, 50 wet shot. Thinking of redoing the exhaust to a 3inch but i should dyno soon after
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Old 07-18-2009, 07:59 PM   #18
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All the hoses/pipe were bought at the dealer iceman00
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Old 07-18-2009, 08:13 PM   #19
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Old 07-18-2009, 08:20 PM   #20
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thanks man
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