Ignition coil MSD or Bremi

‘03 540i original Bremi coils still rockin at 152k mi

Stock Bremi/bosch are the way to go.

Ive had mine misfire all of a sudden, whole car shook, CEL lit up, said code "cylinder 1 misfires" sometimes it ran normal but then rough again. If i gave more than 1/2 throttle it shook even more and it had no power at all. When i checked the coils on mine they were original "BREMI" manufactured and even the date from back in the day was on the bremi coils. They now held up 230000 kilometers since when the car rolled off the factory, thats more than enough service

I went from sub 0.030" spark gaps to the stock above 0.040" spark gaps without getting spark blowout for 4 years now.

I replaced the OEM coil with an MSD ignition coil earlier this year after having similar misfiring issues. Haven’t had any issues since.

I’ve never had an issue with my Bremi coils. Just replaced the suppression tubes. M50/M52 coils very rarely fail. Just the tubes.

Couple years ago I put a full pack of MSD coils on it, and they ran amazing right off the bat, and great for about 3 years before I had a coil fail on me while I was camping.

Replaced all 6 coils with a set of Bremi from FCP 60k miles/9 years ago. I’ve got a new set on the way thanks to their lifetime replacement program. The customer service rep said they should be changed every 3-4 oil changes which sounds crazy to me He said I got luck they lasted 9 years. But I was expecting more like 100k not 60k. Granted I was going uphill with a full load with lights/AC/stereo all on. Probably should have lightened the electrical load but it’s never been a problem until today. SES light came on. Engine started misfiring. Pulled over immediately. Ran the codes. Got a P1353 (cylinder 6 misfire/coil).

Soooo many burnt up MSD ignition coils. We tried our best.

Bremi didn't work on my m3