VAG COP coils (3.2 FSI) Problem?

VAG COP coils (3.2 FSI) Problem?#40609

By turbonetics - Thu Jan 30, 2020 5:03 pm

- Thu Jan 30, 2020 5:03 pm #40609

Hello
Yesterday I have installed VAG coils on my benz m103,with speeduino 0.4.3,but I can't get it to work properly.Engine starts really hard and misfires. I have read something about VAG coils need some stronger spark signal to work as it should. Any ideas about this problem?

Re: VAG COP coils (3.2 FSI) Problem?#40618

By theonewithin - Thu Jan 30, 2020 9:42 pm

- Thu Jan 30, 2020 9:42 pm #40618

Change ignition output resistors to lower ohm versions.

Search the forums. This has come up a few times.

Re: VAG COP coils (3.2 FSI) Problem?#40619

By LPG2CV - Thu Jan 30, 2020 9:44 pm

- Thu Jan 30, 2020 9:44 pm #40619

You may get a better response if you don't open separate topics. Its best to post on your main topic as readers can see more history of what you have done so far. Make it easy for people to help you.

Did it work ok before you changed the coils?

I've read to much dwell can be an issue with some vag coils.

Mere Mortal

Re: VAG COP coils (3.2 FSI) Problem?#40622

By turbonetics - Thu Jan 30, 2020 11:27 pm

- Thu Jan 30, 2020 11:27 pm #40622

LPG2CV wrote: ↑Thu Jan 30, 2020 9:44 pm You may get a better response if you don't open separate topics. Its best to post on your main topic as readers can see more history of what you have done so far. Make it easy for people to help you.

Did it work ok before you changed the coils?

I've read to much dwell can be an issue with some vag coils.

Yes it worked well with edis 6 coil, I will try different resistor.

Re: VAG COP coils (3.2 FSI) Problem?#40624

By turbonetics - Fri Jan 31, 2020 12:31 am

- Fri Jan 31, 2020 12:31 am #40624

I found that I need to change 160ohm resistors to 10-18 ohm,but since I run wasted spark (6c engine) will it be sufficient for 2 COPs at the time?

Re: VAG COP coils (3.2 FSI) Problem?#40630

By theonewithin - Fri Jan 31, 2020 2:54 am

- Fri Jan 31, 2020 2:54 am #40630

Likely be fine.

Re: VAG COP coils (3.2 FSI) Problem?#40659

By turbonetics - Fri Jan 31, 2020 11:18 pm

- Fri Jan 31, 2020 11:18 pm #40659

It worked!
I have replaced 160 ohm resistors with 12 ohm 2W,problem solved.Thanks

Re: VAG COP coils (3.2 FSI) Problem?#40718

By GhjEng - Mon Feb 03, 2020 1:13 pm

- Mon Feb 03, 2020 1:13 pm #40718

Hi guys, I have also done a VAG replacement on my BMW m50b25 engine... but I’m crapping myself to turn the key and burn the coils... please can you confirm if you used “going high” or “going low” for your spark settings? Also, if you have dwell times to share that would be great too. Thanks

BMW e30 m50b25tu & BMW e30 m40b18 turbo (in progress)

Re: VAG COP coils (3.2 FSI) Problem?#40731

By turbonetics - Tue Feb 04, 2020 1:27 am

- Tue Feb 04, 2020 1:27 am #40731

Setting is 'Going low' and dwell time is 2.5.

Re: VAG COP coils (3.2 FSI) Problem?#40733

By pani - Tue Feb 04, 2020 8:27 am

- Tue Feb 04, 2020 8:27 am #40733

Going low.
2.6 ms running
3.0 ms cranking
Check your grounds. Pin 4 grounds to head. Pin 2 grounds to ECU ground.

15V dwell compensation 2,3ms
12V dwell compensation 2,6ms
10V dwell compensation 2,8ms