Even more power from your M52tu/M54

Yes, but it's very expensive to do and you probably won't be happy with the results.

My friend makes an adaptor to perfectly fit the m30 manifold and use all four bolts to hold the tb on. Pm me if you are interested. 75 plus shipping and here is a crappy pic of it on the manifold. All you have to do is dremel the plastic opening on the top a little.

Originally Posted by zmainiac

My friend makes an adaptor to perfectly fit the m30 manifold and use all four bolts to hold the tb on. Pm me if you are interested. 75 plus shipping and here is a crappy pic of it on the manifold. All you have to do is dremel the plastic opening on the top a little.

I don't think that would align the TB very good with the opening, have any pics of it installed on the adapter plate ?

Yea? Are you supposed to dremel the opening to match?

Yeah you would half to dremel the top part a little but. It is a skinny lip and would take a few minutes to do. We could move the hole down a bit to match for the next ones. I am in Philly and my buddy is in Rochester ny so he had to go with verbal communication. I don't know if you can move the hole down because the tb will hit the plenum. Here is the pic of the throttle body bolted to the plate. It can't be moved lower.

Originally Posted by zmainiac

My friend makes an adaptor to perfectly fit the m30 manifold and use all four bolts to hold the tb on. Pm me if you are interested. 75 plus shipping and here is a crappy pic of it on the manifold. All you have to do is dremel the plastic opening on the top a little.

how is the plate getting a good seal with the intake manifold (beside being secured by the x4 mounting bolts). are there gasket?

Originally Posted by flashtwosix

how is the plate getting a good seal with the intake manifold (beside being secured by the x4 mounting bolts). are there gasket?

U have to put silicone I think. Even the TMS swap plate instructions say to put silicone.

Originally Posted by Iceman00

That is, unless you have a 3.0 liter motor: (but keep reading anyhow)

If you remember correctly, I have a M52TuB25, and I swapped an intake manifold from a M54B25. A relatively inexpensive modification that had very good results.

(http://forums.bimmerforums.com/forum....php?t=1320439
and
http://forums.bimmerforums.com/forum....php?t=1253773)

Back then, I had theorized that the B25 intake manifold would be better for my application compared to the B30:

"
Why did I choose the B25 manifold?
People who have 2.8 engines might want to consider the 3.0 manifold, as I went with the 2.5 because I felt its VE would correctly match up with my 2.5, and because from the dynos I had collected (I have over15 or so) on the M52/54 engines, it seemed like the 325 peaked hp higher, and held peak torque longer. (don’t take my word for it, compare dynos for yourself. 30-40tq drop off from peak to redline with the B30 manifold, 20-30tq with the B25. B25 peaks power over 6000rpm, B30 peaks it at, or below 6000rpm.)

Regardless of what you choose, both manifolds will be a step up from stock, and should maintain low end power (maybe increase it, but I didn’t notice any change), furthermore the installation of either manifold should be fairly similar (the 3.0 has a bigger opening from the TB, but that is all)"

http://forums.bimmerforums.com/forum...0&postcount=44

But since then, I ran across this the other night prowling the internet for information:

The M54B30's pipes have been shortened 20mm [compared to the M52tu intake manifold] and their cross section has been increased.
http://forum.e46fanatics.com/showpos...5&postcount=16

This info has also been confirmed on a technical PDF put out by BMW to highlight the differences between the M52tu's and the M54's.

So what is the point of all this?

Glad you asked (or didn't...)
It's to help you make a bit more power by changing the intake manifold on your Mx series engine. But which one? You can recall above I thought the B25 was a better manifold, but it seem I was mistaken, as someone took the liberty of dyno testing the M54B30 manifold on a the M54B25

"Test vehicle E46 325 with M54B25 MY2001. FInal performance: 142kW/ 193hp following DIN70200 (Bosch LPS 02).

Changes: Intake manifold from M54B25 exchanged for an intake manifold from a M54B30.

(translated for you)
*Final performance: 145kW/ 197hp following DIN70200 (Bosch LPS 02).

Maximal perfomance difference compared to the standard intake is 6,5ps at 4300 RPM.
Here are some comparisons between the two dyno charts:
performance difference in hp at Rev:
4.5ps at 3300 RPM
2.0 3640
4.2 3980
6.5 4320
4.2 4660
3.7 5000
3.3 5340
3.5 5680
4.2 6020"

http://www.bmw-syndikat.de/bmwsyndik...OPIC_ID=100301

Needless to say, if you have a M54 powered car already, don't switch. And if you Have an M52tu powered car, grab a B30 manifold if you can, otherwise, I doubt you'll miss the average of 3.5whp across the board.

*Cliffs
M54B30 manifold is the best manifold for all M52tu and M54 powered cars, though a M54B25 manifold will work well too.

Do you think this swap would work on an M56?

Well did some research here to answer my own question. Don"t think its going to work on an m56 since the lower injector o-rings are a completely different part # from the m54

^^ Whats the point of the M30 swap??? deletes Disa, and how would that work with our cars DME... Im cofuzzled PLZ explain?

better flow characteristics

Like enough to get rid of adjustable runners??

Originally Posted by JDUTHIE

Like enough to get rid of adjustable runners??

Why would you want to do that?

does the m30 manifold have them?

Originally Posted by JDUTHIE

does the m30 manifold have them?

Yes.

Thanks for the 2.5L vs 3.0L comparo !

Maximal perfomance difference compared to the standard intake is 6,5ps at 4300 RPM.
Here are some comparisons between the two dyno charts:
performance difference in hp at Rev:
4.5ps at 3300 RPM
2.0 3640
4.2 3980
6.5 4320
4.2 4660
3.7 5000
3.3 5340
3.5 5680
4.2 6020"

Thats a big drop at 4.5ps at 3300 RPM
2.0 3640

Hey guys what degree have intake cam in M54B25? I search and found 224 or 228. I'm going to install full M54 b30 intake with cam to b25 and tune.

Originally Posted by Iceman00

That is, unless you have a 3.0 liter motor: (but keep reading anyhow)

If you remember correctly, I have a M52TuB25, and I swapped an intake manifold from a M54B25. A relatively inexpensive modification that had very good results.

(http://forums.bimmerforums.com/forum....php?t=1320439
and
http://forums.bimmerforums.com/forum....php?t=1253773)

Back then, I had theorized that the B25 intake manifold would be better for my application compared to the B30:

"
Why did I choose the B25 manifold?
People who have 2.8 engines might want to consider the 3.0 manifold, as I went with the 2.5 because I felt its VE would correctly match up with my 2.5, and because from the dynos I had collected (I have over15 or so) on the M52/54 engines, it seemed like the 325 peaked hp higher, and held peak torque longer. (don’t take my word for it, compare dynos for yourself. 30-40tq drop off from peak to redline with the B30 manifold, 20-30tq with the B25. B25 peaks power over 6000rpm, B30 peaks it at, or below 6000rpm.)

Regardless of what you choose, both manifolds will be a step up from stock, and should maintain low end power (maybe increase it, but I didn’t notice any change), furthermore the installation of either manifold should be fairly similar (the 3.0 has a bigger opening from the TB, but that is all)"

http://forums.bimmerforums.com/forum...0&postcount=44

But since then, I ran across this the other night prowling the internet for information:

The M54B30's pipes have been shortened 20mm [compared to the M52tu intake manifold] and their cross section has been increased.
http://forum.e46fanatics.com/showpos...5&postcount=16

This info has also been confirmed on a technical PDF put out by BMW to highlight the differences between the M52tu's and the M54's.

So what is the point of all this?

Glad you asked (or didn't...)
It's to help you make a bit more power by changing the intake manifold on your Mx series engine. But which one? You can recall above I thought the B25 was a better manifold, but it seem I was mistaken, as someone took the liberty of dyno testing the M54B30 manifold on a the M54B25

"Test vehicle E46 325 with M54B25 MY2001. FInal performance: 142kW/ 193hp following DIN70200 (Bosch LPS 02).

Changes: Intake manifold from M54B25 exchanged for an intake manifold from a M54B30.

(translated for you)
*Final performance: 145kW/ 197hp following DIN70200 (Bosch LPS 02).

Maximal perfomance difference compared to the standard intake is 6,5ps at 4300 RPM.
Here are some comparisons between the two dyno charts:
performance difference in hp at Rev:
4.5ps at 3300 RPM
2.0 3640
4.2 3980
6.5 4320
4.2 4660
3.7 5000
3.3 5340
3.5 5680
4.2 6020"

http://www.bmw-syndikat.de/bmwsyndik...OPIC_ID=100301

Needless to say, if you have a M54 powered car already, don't switch. And if you Have an M52tu powered car, grab a B30 manifold if you can, otherwise, I doubt you'll miss the average of 3.5whp across the board.

*Cliffs
M54B30 manifold is the best manifold for all M52tu and M54 powered cars, though a M54B25 manifold will work well too.

I have a 2004 325I M56. Will the intake manifold off a 2001 330I benefit me in anyway? Thanks in advance