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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 > Three Stage Intake Manifold Conversion for 328/325



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      06-06-2010, 12:33 AM   #155
scanboy
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Originally Posted by e90pilot View Post
Your car has the 3-stage intake because it has lower compression. It would have very little power if it didn't. You can probably tune it, but you won't be near 330i territory.
Why is that? Is it because of the engine itself or exhaust, 2nd cat etc..? Would having a tune similar to 330 actually hurt the N51 engine (not being able to handle the higher compression ratio)?
By "near" I meant just hp at crank.
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      06-06-2010, 02:13 AM   #156
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N51 was created for lower emissions so not only is the combustion chamber different, I think the entire exhaust is different. Your car already makes use of the 3-stage intake manifold. Putting a 330 tune wouldn't work because your engine is physically different. It's not really that your car can't handle the higher compression. It's just not something you can tune into the software. You would need new pistons to get a higher compression. But you can still get more power with a simple tune. Perhaps an exhaust might free up more power too.
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      06-07-2010, 02:50 PM   #157
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Originally Posted by e90pilot View Post
N51 was created for lower emissions so not only is the combustion chamber different, I think the entire exhaust is different. Your car already makes use of the 3-stage intake manifold. Putting a 330 tune wouldn't work because your engine is physically different. It's not really that your car can't handle the higher compression. It's just not something you can tune into the software. You would need new pistons to get a higher compression. But you can still get more power with a simple tune. Perhaps an exhaust might free up more power too.
Ah, I see, thanks.
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      06-18-2010, 03:31 PM   #158
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sorry guys I'm in New York until the end of the week, hopefully I can revive the thread then with updates.
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      06-18-2010, 03:36 PM   #159
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I need someone to source out a manifold for me I'm afraid I don't have time to sit and look for places that sell it. if someone could do this for me so that I can pay and it arrives when I am back home, that would be great.

pm me if anyone could do this, ill make the payment and do the DIY as soon as I get back home
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      06-26-2010, 03:39 PM   #160
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man, i hate that i live in faroe islands want these parts so bad, and oe tune...

are the manifold parts heavy ? and can i just buy them from the bmw store here ?
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      06-26-2010, 04:57 PM   #161
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You can buy them from any dealership and the parts are not heavy at all. It's all just a bunch of plastic.
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      06-26-2010, 07:54 PM   #162
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      06-27-2010, 09:23 AM   #163
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e90pilot. you have done all this. do you feel big difference in the power ?

and i read some where, that you had to take out your ecu, and ship it somewhere to get the benefit of this manifold upgrade ? if i buy the oe tune i don't need to do this. right ?

I only need the manifold parts. and the oe tune. nothing more ?
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      06-27-2010, 11:35 AM   #164
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Quote:
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e90pilot. you have done all this. do you feel big difference in the power ?

and i read some where, that you had to take out your ecu, and ship it somewhere to get the benefit of this manifold upgrade ? if i buy the oe tune i don't need to do this. right ?

I only need the manifold parts. and the oe tune. nothing more ?
Dude. You just need the manifold, which will give you ~8 whp.

Then get the Gintani IM swap tune, which you have been asking about.

Don't go any other route. You don't need to take out your ECU,or touch your ECU.
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      06-27-2010, 02:09 PM   #165
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thanks aonarch you helped me a lot
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      06-28-2010, 06:51 PM   #166
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Order the manifold parts today. from the dealer here in Faroe islands. payed 1.382.36 UDS.

after i have installed them. then i will order the oe tune and i will be flying with 265 hp
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      06-28-2010, 07:30 PM   #167
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So what happen to the diy?
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      06-28-2010, 10:03 PM   #168
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So what happen to the diy?
I sold my 328i, never did a write up, not sure about the other members.
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      06-28-2010, 10:09 PM   #169
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I remember you siad you had alot of issues withthe 328' was it cause by your tunes?
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      06-29-2010, 03:32 AM   #170
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So has anyone here actually just bolted it on w/o doing the tune and really worked? I've read all 8 pages several times and I just get confused. I am wanting todo this but I am not dropping a grand if it will be buggy.
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      06-29-2010, 04:12 AM   #171
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Yes it works but power delivery will not be smooth. The DISA valves work by getting rpm info themselves and not by any input from the DME. The only thing the DME does is optomize the engine map to make use of the intake manifold. Honestly, there's no reason to get the manifold with no tune. Yes you might get a few more HP but there will be a significant dip in torque at around 3500 rpm.
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      06-29-2010, 01:56 PM   #172
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So has anyone here actually just bolted it on w/o doing the tune and really worked? I've read all 8 pages several times and I just get confused. I am wanting todo this but I am not dropping a grand if it will be buggy.
Yes I did it yesterday!
I have N53 (DI) with slightly different intake manifold then N52. The manifolds on 325 and 330 are identical except for the DISA valves, no need for new vent hose.
I donít have any tune yet. There is noticeable increase of power and itís very smooth, I donít have dip in torque at any rpm.
However, I will get a tune, when I found one for N53 engine.
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      06-29-2010, 02:37 PM   #173
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To bad the USA won't get the n53.
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      06-29-2010, 03:54 PM   #174
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To bad the USA won't get the n53.
But you have a tune for N52 and as far as I know there isnít one for N53.
In the meantime Iím happy with the way it works. I have BMS power box, hopefully I will be able to replace it with a re-flash of ECU.
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      06-29-2010, 10:28 PM   #175
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what company created the tune for the intake manifold swap? where can i find the tune? i have a 330 intake sitting in my room waiting on a tune, i must have lost track of this.
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      06-29-2010, 10:41 PM   #176
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OE tuning did my car but it's not quite 100%. Any company that has a 330 tune will be able to tune your car.
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