I've got a question for the OM603 guru's. I'm needing a turbo for my 603 3.5 engine. Will a turbo in a 3.0 work?
I'm concerned about the difference in boost pressure, since the 3.5 turbo is a little bigger.
Thanks.

Turbo will work but it won't flow as much air. Might spool faster but only slightly. I believe the difference is .55 trim vs .60 trim

Oh.. and it may need to be re-clocked depending on what car your 3.5 is in. The w140 body style cars used a different exhaust manifold.

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'98 E300 Turbo "Juliette"
'85 Federal 300TD

Ok, thx for the info. It's in a W126 350sdl. Would it be enough to even notice in normal driving?