Ok so I bought another DRZ. 2003 with a T4 exhaust and an Athena kit. THe bike runs awesome. Not as good as the S with the RHC cams and FCR 41 though. But I decided to swap out CDIs for a few minuets and see what it would be like to go to 10k instead of 9.5. But when I put the E CDI on my S it won't start. Just cranks. Put them back on their origional bikes and no problems. I thought it was a direct swap out? The E runs strong only problem is the off idle bog is extremely bad compared to my S, which has no bog, but I can sort that out. Why would the E CDI not work on the S?