Ignition coil Bosch or DELPHI

Just stuck a load of Bosch in mine, worked a treat, xHP throttle blip downshifts were sometimes jerky and causing transmission faults but now they’re as smooth as butt’uh.

Delphi. BMW started with Bosch and after misfire issues they switched to Delphi (I think in 2011?). Go with Delphi, my old e82 with an n52 had tons of misfires at 40k with Bosch coils and the Delphi’s had no issues.

Around 2 months ago, one of the starting coils failed. I checked here and some said that the stock "Delphi" coils are known for failing. So i changed all of them for "Bosch" coils.

I had issues with misfires until I replaced the coils with genuine oem. Before that I had all new Delphi 10571 which were not the same and ultimately fixed my misfire issues.

get the Bosch brand their the same as OEM trust me I know don’t get any other brand even though their going to be cheaper get the Bosch. Besides honestly most of the ignition coils is Bosch companies just throw their name on it to charge more

Get a Bosch and skip the brand logo. Same part and available…aaand cheaper. Same issue for me c63s.

Bosch working great for a few years now, cheap as dirt on rockauto

This is a new Bosch coil (but also happened with old coil), wires, cap, rotor, and plugs as mentioned above.

I have changed the ignition coils, spark plugs, MAP sensor, fuel filter, and ran fuel cleaner in the tank twice. The only time it seemed better was for a couple of months after I changed ignition coils (Bosch).

I had troubles with Delphi units. Replaced all 6, then replaced them again with a wty set. Still had issues.