Ignition coil DELPHI or OEM Audi

AC Delco is an OEM GM parts and any coil will do pretty much personally I use Delphi ones they seem to last pretty long

I got Delphi and they work great

Delphi. I'm confident they're better than Bosch.

You can use either, but Delphi is OE.

I use Delphi on my N20 which use the same coil as N52. No problem so far.

I got my coils on eBay and haven’t had any issues in 3 years and still going strong. They are delphi brands so those are pretty good too.

Got mine from Rock Auto and have no issues. I grabbed Delphi brand per recommendations from forum posts.

I have used the R8 red top coils. I went back to stock coils after noticing a slight low speed low rpm hesitation. No misfire codes but it just didn’t run the same. It ran great when winding it out but I don’t do that all the time.

I tested the coil and found it to be faulty (that's what I get for buying a cheap one). The first time I tested it, it seemed to be fine but that was on the truck. This time I took it off to make sure I got a good connection and sure enough it fell out of range on both of those tests....

They don’t look like OE plus they have Delphi stamped on them. I’m pretty sure Delphi is not an OEM for BMW. The tarnishing looks like rust which could be explained by the use of inferior materials.