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Fine tuning my E46 320d (log inside!)
20-02-2017, 21:30 PM,
Post: #11
RE: Fine tuning my E46 320d (log inside!)
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20-02-2017, 23:52 PM, (This post was last modified: 20-02-2017, 23:53 PM by Enabled.)
Post: #12
RE: Fine tuning my E46 320d (log inside!)
The only damos for BMW EDC16 that was complete enough (to have the PID maps marked) for the m47 was from the E90 version, so it would take a while to find them on your DDE version. Maybe someone has a more proper one.
I have learned/experimented a bit about the turbo control only on VAG EDC15, but BMW and VAG used the same idea.

I looked at the .csv, and yes, you can see the boost rising too fast, then PID opening the vanes, which leads to less MAF signal and boost, and the smoke limiters (or maybe lambda maps) reducing fueling. Theoretically straight pipe does make the boost a little harder to control.

A quick and easy test is to allow for a richer fuel mixture, so your fueling will not drop. Then the power should stay constant, but you may get a little smoke.
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21-02-2017, 10:55 AM,
Post: #13
RE: Fine tuning my E46 320d (log inside!)
I wouldn't be too bothered about smoke, if it's just for testing.

The straight pipe is most definitely the reason for all of this as it started to spool way faster after it was done smile

The car does not have any lambda probes so that is not interfering at the moment, rather just the smoke map.
I'd like to have no loss of boost but still have it spool as fast as it is right now, my options would be to make the N75 drop a little faster before 1800rpm, or make the PID less strict, right?

No idea if this is of any use but I found some info about the location of the PID:
"PID maps are located just after SVBL. You should look for 3 4x10 maps (first is D, second I and last P)."
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21-02-2017, 13:11 PM,
Post: #14
RE: Fine tuning my E46 320d (log inside!)
The PID multiplier maps are just half the story. They don't work by themselves, there are some single bytes that are even more important, but it's a start.
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05-03-2017, 06:58 AM,
Post: #15
RE: Fine tuning my E46 320d (log inside!)
The weather is getting much nicer and I could run some tests if anyone would try to make the necessary changes smile
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06-03-2017, 00:44 AM,
Post: #16
RE: Fine tuning my E46 320d (log inside!)
This any use.? do you have bosch number?


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06-03-2017, 17:11 PM, (This post was last modified: 06-03-2017, 17:12 PM by martinlink.)
Post: #17
RE: Fine tuning my E46 320d (log inside!)
The Bosch HW number should be 0281010565, SW 1037361858.
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13-03-2017, 17:17 PM,
Post: #18
RE: Fine tuning my E46 320d (log inside!)
I just got an idea after looking at some boost logs of other people's cars...

Maybe the spike we're seeing should be there, just up to a higher pressure, and then with a drop to normal boost levels?

What I mean is, I could make the turbo actuator shorter by a few turns which would make the boost spike by about 200mbar over requested. Then it would fall down and stay at the requested level.

[Image: 160mbar%20amp%209%20turns%20III%20gear%2...bcffwv.png]

This is what I have in mind, only maybe 1 more turn shorter so it would stay above the requested. Then maybe tone down the spike by N75%.
Sounds like a plan?
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14-04-2017, 20:56 PM, (This post was last modified: 14-04-2017, 21:00 PM by volavka.)
Post: #19
RE: Fine tuning my E46 320d (log inside!)
I have gotten as far as to mess with the PID maps and also with the single values which control the working sphere of the PCR governor. The last part didn't work at all so I'm stuck again...

Here's some info along with the logs from my tests (see last post for .ori and modified file):

REMOVED

Can anyone check whether the addresses I've posted are correct? Or maybe somebody has the Damos for sw 361858?

Thanks!
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