options in coil for 525i

[nariusb]

Have you guys replaced the stock bosch coil with aftermarket one like Jacobs http://go.mrgasket.com/ProductDetail...minselection=3
or with Jacobs Mileage Master?
Would that be a viable option when replacing the stock coil?

[nariusb]

Have you guys replaced the stock bosch coil with aftermarket one like Jacobs http://go.mrgasket.com/ProductDetail...minselection=3
or with Jacobs Mileage Master?
Would that be a viable option when replacing the stock coil?

Anyone?
Also can a coil that's not a 100% cause longer cranking?