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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 02-20-2013, 07:36 AM   #1
hughfr4nc15
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Join Date: Feb 2013
Location: Portugal
Posts: 32
My Ride: BMW 318i E46
Question INPA Values and DISA Rattle - Need Opinion

Hello,

I bought an E46 318i (M43) a couple of months ago. Although it was/is in a very good condition, I'm a meticulous guy so I've done some maintenance on it:

- Fuel Filter
- Oil Filter
- Polen Filter
- Air Filter
- Engine Oil
- Gearbox Oil
- Differential Oil
- V-Belts and Pulleys
- Oil Filter Cover O-Ring and Gasket
- Spark Plugs

At the moment there are two things that are bugging me the most, first some INPA Values that I would like some opinions:






1 - Load Value: What causes this, from what i've read maybe MAF?
2 - Ignition Angle Degree: Any thoughts?
3 - Pulse duty factor: ICV? MAF?
4 - Lambda Sensor Voltage Before KAT: This oscillates quite a bit @ idle, defective?
5 - Rough Values: Cylinder 4 used to be near or higher than max value, then I replaced all the spark plugs and it lowered. What do you think of this values? Why is Cylinder 3 always around 0?

Error 171 is also showing up on INPA.

Second, I hear some rattling when I'm driving mostly around 2500 rpm. I believe it might be the DISA. Below is a recording I've made with my phone placed near it, what's your opinion? From what I've seen in other videos it seems like it needs to be replaced...

Thanks in advance!

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Last edited by hughfr4nc15; 02-20-2013 at 09:31 AM.
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Old 02-25-2013, 01:45 PM   #2
dvd64
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Join Date: Sep 2005
Location: france
Posts: 291
My Ride: bmw e46 CI
Yes i have the same error and motor sound
changed my maf for error 171 and now no error

for the "sound" change your disa , i have changed mine too because ii had the same sound , After that all sound nice
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Old 02-25-2013, 03:59 PM   #3
hughfr4nc15
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Location: Portugal
Posts: 32
My Ride: BMW 318i E46
Thanks for you feedback, will replace it ASAP.
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Old 03-11-2013, 05:24 AM   #4
hughfr4nc15
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My Ride: BMW 318i E46
I've cleaned my ICV, throttle body and MAF and no big difference in INPA values. Idle is a bit more steady though. The boot between the MAF and the throttle body is ok, no cracks.
I plan to replace the DISA ASAP.






I also plan to replace the wires based to try to improve the rough values. Car seems a bit hesitant sometimes when driving.
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Old 03-25-2013, 10:51 AM   #5
NumbaOneNewb
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Location: Portland, OR
Posts: 2,574
My Ride: 2001 bmw 330ci
If your valve cover shows signs of recent past oil leak check your spark plugs

Sent from my SPH-L710 using Bimmer App
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