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Enjoy it!

The sensor to the ECU can make the trick, but I'd go methodical step by step, ss I told you, first you need to figure out, is it an electrical problem, or fuel related one when it's warm.

It's cranking, so starter is ok.
Check if there is a spark.



Sensors are cheap so it's a good idea to ...

Is it an L-jet or Motronic?

L-jet, idles can be adjusted manually (some motronics too)

Have you checked the Throttle position sensor? dos it got continuity between terminals 2 and 18 (left and middle connectors)

here is a few good tips how to test some components (it's about Motronic, but some ...

have you tried this

Solved!
bought a chip from Conny (Coneus) from Germany, he has good reputation on Germans forums.

Now the engine is sow nice!!!
acceleration from idle to ~6700 rmp, no hesitation, uniform, less noise.

more torque at low and middle RPM

Now she like 100 RON fuel

unfortunately I don't know anybody who understand well MS.

But it should be lot on info on the web and on forums
also some maps which can be used as a starting point.

If you'll use Megasquirt, to have performance, just replace VAF with MAF or even MAP, individual ignitions.

What Airflow meter are You using?

With stoc 179 chip, even idle are at 950-1200 rpms

Filled with 100 Ron /Premium petrol
it's an improvement.

This suggest that timing is the issue.

I'm using 98 RON now with 179 and before with 061.

I'm not changing the original files, just copied them to a new EEPROM chip to play with them, not affecting the original chip.

Just downloaded TunerPro, it's much easier to see all maps.

Hi,

it's an old topic, but just to share my pinging issue experience on 10:1 CR M30B34 with 179 ECU
The pinging at low RPMs under high lowds, is beacause of the difference in CR, I mean 179 came from M30b35 with 9:1 CR, and our M30b34 engines are 10:1.
1 unit CR difference is quite big for ...

Not a direct answer
I'm using an ECU form an engine with lower CR by 1 unit and I have problems such as luck of power and pigging at low RPMs.

So going this way, will require some modification on Ignition maps.

Hello,

Situation:
535i, Euro, 218hp, M30b34, Motronic 1.0 CR 10:1

Changed from Motronic 1.0 (061 ECU) to Motronic 1.3 (179 ECU)

Motronic 1.3 is from an e32, M30b35 with CR 9:1.

Issue:
Using ECU from B35 with CR 9:1 to B34 with CR 10:1, lost some torque/power, pinging at low RPM under load etc ...