I have a single turbo fd. It has msd 6a on the leading coil. The leading coil stop working today. There are threads saying that fc coil is better than fd coil and therefore, I want to go the fc route.

1) Should swap out just the leading coil or should I swap out for both the fc leading and trailing coil?

2) How do the fd ignitors compare to the fc ignitors? Should I go for the fc?

3) Are all fc coil and ignitor assembly the same for all models?

 

If you got the money do all of them. If not do just the leading as that is where 90% of your gains are going to be. And from my research pretty much everyone agrees that the FC coils are superior to the FDs.