There was a thread quite a while ago debating the use of capacitive discharge ignition systems. Suffice it to say, capacitive discharge ignition systems are VERY good, but the average street car will not make use of it's full potential. You are better off getting a better coil to replace the ridiculously undersized oe coil.

Granted, on turbos, the compression is pretty low at under 9:1. But still, I think that coil is just WAY too small. I'm definetly upgrading mine when I start upping my boost electronically.