[crex]

I thought it didnt have it according to bmws tech manuals
but a bmw tech informed me of this...

"Well good news, I had to do another knock sensor on an E90 328 today (seems like its gonna be a common thing) and took a closer look, it has the three stage intake with 2 DISA valves, and its a three liter, so I think there is some software tuning, exhaust and other mods that will awaken this motor, time wil tell"

[esbezee92]

speechless...

i really hope this is true but am skeptical, anyway we can find out for sure? where would we look exactly?

[evoi19]

i don't think it has a 3 stage intake. Not sure what DISA is, but here's what i've found.

Our cars have a 3.0L DOHC 24-valve I6 engine-inc: double-VANOS variable valve timing and Valvetronic

[ksfrogman]

Originally Posted by evo119

i don't think it has a 3 stage intake. Not sure what DISA is, but here's what i've found.

Our cars have a 3.0L DOHC 24-valve I6 engine-inc: double-VANOS variable valve timing and Valvetronic

Here, check this out:

http://www.e90post.com/forums/showthread.php?t=37444

The 330i N52 has a three-stage differentiated air intake system (DISA) with two DISA actuator motors.

[Chesmu]

a BMW tech told you to chip your car?

[evoi19]

Originally Posted by ksfrogman

Here, check this out:

http://www.e90post.com/forums/showthread.php?t=37444

The 330i N52 has a three-stage differentiated air intake system (DISA) with two DISA actuator motors.

Thanks Michael, that link definitely cleared it up!

I just took a look at the intake manifold on mine, and i don't see the actuator, so I'm pretty sure we don't have them. It would've been nice, but wishful thinking...

[esbezee92]

so was this tech def wrong?

[crex]

Originally Posted by Chesmu

a BMW tech told you to chip your car?

no not at all..

very odd... i am sure he knows what he is talking about maybe he was working on a 330i by mistake..

[Shazmonkee]

i was excited for a second there. lol

[crex]

can anyone else with a 328 confirm whether the 3 stage intake manifold with DISA is present or not? It seems it definately was a 328

[esbezee92]

Originally Posted by crex

It seems it definately was a 328

does this mean you talked to that tech again? did he say anything new or that he was sure it was the 3-stage on a 328?

[crex]

Originally Posted by esbezee92

does this mean you talked to that tech again? did he say anything new or that he was sure it was the 3-stage on a 328?

Yeah, he was pretty sure but after looking up the technical specs, the 328 is not supposed to have the 3 stage intake manifold. So there is a discrepency somewhere. It would be nice if someone else with a 328i could check and could confirm.

[esbezee92]

well i have a 328i so if someone could tell me how/where to check i would be more than happy to, i just dont know where to look

[crex]

Originally Posted by esbezee92

well i have a 328i so if someone could tell me how/where to check i would be more than happy to, i just dont know where to look

I believe you can look at the pictures of the 3 stage from a 330i in this thread and compare them to your intake manifold. http://www.e90post.com/forums/showthread.php?t=37444

[esbezee92]

ok so i looked (twice) and idk what this tech was looking at but 328's dont have the 3 stage intake manifold

[crex]

Originally Posted by esbezee92

ok so i looked (twice) and idk what this tech was looking at but 328's dont have the 3 stage intake manifold

Thanks for looking... I guess it could not have been a 328i, really disappointing. After reading dinan's white paper, its looking like converting the 328i to the higher output specs is not going to happen anytime soon given the complexity of bmw's ecu's unless of course bmw offers something from their new performance parts division.

[Oblivion08]

where could we find this chip from?

[crex]

Ok looks like the regular 328 doesn't have it but the N51 super low emissions version or whatever its called had it on one car. So this seems even more odd.
Does anyone with the N51 328i care to check their intake manifold??

[esbezee92]

hmm i thought the n51 was the sulev or super low emission or whatever you where referring to thats the low emission 2.5l that other countries have, i searched online and couldnt find anything about a n51 low emmisions 328i or even 3.0l engine at all

[crex]

Originally Posted by esbezee92

hmm i thought the n51 was the sulev or super low emission or whatever you where referring to thats the low emission 2.5l that other countries have, i searched online and couldnt find anything about a n51 low emmisions 328i or even 3.0l engine at all

here is some info on N51

In order to comply with SULEV requirements, the N51 is
another variant of the N52
engine. There are various measures to meet the
EPA/CARB standards, some of which
are familiar from the previous SULEV (M56) engine.
Some of the SULEV measures for the N51 include:
• Near engine catalyst with additional underbody
catalyst
• Secondary air system
• Optimized combustion chamber geometry in cylinder
head
• Modified piston crown for lower compression
• Plastic valve cover with integrated crankcase vent
valve and separator (from N52KP)
• Stainless steel fuel lines with threaded connections
• Radiator with “Prem-air” coating
• Throttle system - EGAS08 carried over from N52KP
• Airbox with Activated carbon filter for EVAP control
• Purge system pipes are made from “optimized” plastic
Crankcase Ventilation N52KP and N51
The crankcase ventilation system on the N52KP and N51
uses a crankcase ventilation
valve which is incorporated into the cylinder head
cover. Oil is separated via an internal
labyrinth which is also incorporated into the cylinder
head cover.
This system, like the N54, also benefits from the
integral components. This design
allows engine heat to warm the crankcase vapors which
decreases the likelihood of any
moisture freezing in the system during conditions of
low ambient temperature.
Vehicle length 4580 4448
Overall vehicle width 1782 1757
Vehicle height, unladen 1395 1369
Wheelbase 2760 2725
Overhang front 771 774
Overhang rear 1049 1049
Track width front 1500 1474
Track width rear 1513 1486
Wheels /tires 225/45 R17 205/55 R16

[Sik328i]

The 2009 328i e92 did not come from the factory with the 3Si manifold in the U.S., as well as the DME software was "dumbed-down" in order to comply with EPA laws. However, the wiring harnesses for both DISA valves are present in the engine bay. This means that the 3Si manifold can be installed. I know because I did the mod on my 09 328i.

If you do install one, I highly recommend you also flash the DME with the Bimmergeeks 328i to 330i software to fully activate the Disa valves. There's instructions to do this on their website.

[The Nightman]

Originally Posted by Sik328i

The 2009 328i e92 did not come from the factory with the 3Si manifold in the U.S., as well as the DME software was "dumbed-down" in order to comply with EPA laws. However, the wiring harnesses for both DISA valves are present in the engine bay. This means that the 3Si manifold can be installed. I know because I did the mod on my 09 328i.

If you do install one, I highly recommend you also flash the DME with the Bimmergeeks 328i to 330i software to fully activate the Disa valves. There's instructions to do this on their website.

Glad someone figured it out after 17 years!