m54b30 intake camshaft on m52b25 with stock exhaust camshaft

[mikyyy]

Hello guys. I have a m52b25 with m50 manifold, visco removed, 68mm bbtb, m20 flywheel, m3 euro airbox with 540i maf and pink injectors to assemble, and piggyback ecumaster DET3. I purchased a m54b30 intake camshaft (240 duration) and I would like to mount it with the original exhaust camshaft (228 duration). I would like to know if someone has already done it and how. You have delayed the exhaust shaft or left as it is? thank you guys

[leomarcus]

On turbo CAM usually exhaust is advanced when installing longer intake.
This to reduce overlap and gas back on engine cylinder.
Yu can have overlap only if yu have very good exhaust system big wheel and big ar.
To check If overlap is possible yu have to check if exhaust manifold pressure is lower than intake measuring It.

Anyway in 90 percentuale of engine turbo i ever seen exhaust pressure is bigger or equal to intake, so to preventivo detonation i suggest exhaust advanced.