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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 12-01-2013, 08:59 PM
FutureFuzz 26 FutureFuzz 26 is offline
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Location: Bardstown, Ky
 
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Mein Auto: 00' Imola Red 528i Sport
323i software on 528i ECU?

I have a 2000 528i, I put a 1999 323i engine in it. So I have been told I need to put the 323i software on my ECU to make it run right.

How do I do it?
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  #2  
Old 12-02-2013, 12:37 AM
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mjalloul11 mjalloul11 is offline
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Mein Auto: 1996 528i 1999 MB c240
Before doing anything, try starting the car with your old ECU, only 300cc between the 2 engines and if no SES light and drivability problems, don't bother.
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Old 12-02-2013, 08:20 PM
FutureFuzz 26 FutureFuzz 26 is offline
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Mein Auto: 00' Imola Red 528i Sport
Quote:
Originally Posted by mjalloul11 View Post
Before doing anything, try starting the car with your old ECU, only 300cc between the 2 engines and if no SES light and drivability problems, don't bother.
It has the original 528i ECU in the car.
But it completely stalls out if I leave the intake VANOS solenoid connected. It gets seriously out of time.
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Old 12-03-2013, 12:19 AM
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mjalloul11 mjalloul11 is offline
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Mein Auto: 1996 528i 1999 MB c240
Timming of the 2 engines is the same. Does it have any cods, maybe the intake sensor is out or the vanos solenoid in stuck.
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Old 12-03-2013, 10:14 AM
FutureFuzz 26 FutureFuzz 26 is offline
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Location: Bardstown, Ky
 
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Mein Auto: 00' Imola Red 528i Sport
Quote:
Originally Posted by mjalloul11 View Post
Timming of the 2 engines is the same. Does it have any cods, maybe the intake sensor is out or the vanos solenoid in stuck.
Intake cam positions sensor (I have put in 2 that didn't change anything, but where not OEM parts)
Down stream O2
System emissions evap control

But like I said. If the VANOS solenoid is connected the car is a lot less sluggish. But nearly stalls out at idle. If I simply unplug the solenoid the idle gets much smoother, but acceleration is weak.
I tried swapping solenoid for one off my old engine. Nothing really changed.
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