I think some of you got it a little backwards when you say: "the turboengine doesnt need as much overlap, doesnt need long duration... ...the turbo pushes the mixture in anyways... "

As I understand it the turboengine CANīT have as much overlap and duration on exhaustcam because of the backpressure created by fairly small turbochargers. Dont you think the turboengine would benefit from wilder cams too if they only could useīem? On the induction side, A turboengine isnīt that different from a n/a engine, the n/a also uses pressure to get the air into the engine , atmosferic pressure. At 14,7psi boost you have twice as much pressure to get the air in compared to the n/a engine
( infact turboengines can use pretty wild cams too, the trick is to minimize backpressure. I should know, my cams got more duration than any BD cam I know of.)

Early intakevalve closing will lead to more gases to compress than late closing, at low engine speeds. At high rpm it isnīt a big problem, because it is hard to get the VE high enough.

Iīm from Norway so I hope you guys can manage to read this....

L.