Hello everyone,
Got an Audi urs6 (2.2 AAN), switched from stock ECU to standalone EMU Black.
Basically, I still can't figure out the voltage drop I get while turning on anything electrical in the car (headlights or heater for example).
If I turn on the low beam or high beam, my lambda goes a bit rich, and my tacho won't go above 5000 rpm and working erratically although in EMU software I can see it going 7000+ rpm just fine. Turning the heater on or the lights would make it run even richer.
EMU Black would record a small voltage drop 0.3-0.5 if I turn anything on, but I'm pretty sure it's different to what it actually is, I will take a measurement directly at the injectors and update the post.
I have used the stock wiring, just made a PnP adapter for the EMU.
The measures I've taken so far:
I have triple checked all the grounds on the car
Removed the dashboard, fully disassembled and made sure I have no issues with it
I checked the voltage drop on the alternator and on the battery, again it's just fine (0.2-0.5v, when turning on the heater or lights)
The injectors are calibrated properly so even if there's a voltage drop they should compensate just fine.
I did not have any issues like this on stock Motronic ECU.
I think that the fact that it goes richer and tacho works erratically is somehow linked.
Before switching to Standalone (EMU Black) I did the following mods with the car:
1. Converted from automatic to manual transmission
2. Switched to the TFSI coils (as per schematics on the internet, tested 2 different harnesses as to exclude this as an issue)
3. Made sure that all my power grounds do not link with sensor grounds
Any ideas?
Could this be a bad ground somewhere, an old relay that's giving me this headeche?
What relays I could check, or maybe you could point me in the right direction?
Got an Audi urs6 (2.2 AAN), switched from stock ECU to standalone EMU Black.
Basically, I still can't figure out the voltage drop I get while turning on anything electrical in the car (headlights or heater for example).
If I turn on the low beam or high beam, my lambda goes a bit rich, and my tacho won't go above 5000 rpm and working erratically although in EMU software I can see it going 7000+ rpm just fine. Turning the heater on or the lights would make it run even richer.
EMU Black would record a small voltage drop 0.3-0.5 if I turn anything on, but I'm pretty sure it's different to what it actually is, I will take a measurement directly at the injectors and update the post.
I have used the stock wiring, just made a PnP adapter for the EMU.
The measures I've taken so far:
I have triple checked all the grounds on the car
Removed the dashboard, fully disassembled and made sure I have no issues with it
I checked the voltage drop on the alternator and on the battery, again it's just fine (0.2-0.5v, when turning on the heater or lights)
The injectors are calibrated properly so even if there's a voltage drop they should compensate just fine.
I did not have any issues like this on stock Motronic ECU.
I think that the fact that it goes richer and tacho works erratically is somehow linked.
Before switching to Standalone (EMU Black) I did the following mods with the car:
1. Converted from automatic to manual transmission
2. Switched to the TFSI coils (as per schematics on the internet, tested 2 different harnesses as to exclude this as an issue)
3. Made sure that all my power grounds do not link with sensor grounds
Any ideas?
Could this be a bad ground somewhere, an old relay that's giving me this headeche?
What relays I could check, or maybe you could point me in the right direction?
Comment