OM 617 Turbo Holset HX35w question!

[sbo]

Hello and respect for all lovers and owners of Mersu-Benzes!

I ve got a question and hope you can help me.
My Om 617 Turbo is now powered by Holset HX35w. But no changes i marked since i left the carshop where i ve installed this turbo. Maybe now my car is a little bit dumber than it was with stock turbo. I don't use intercooler, i haven't done anything with diesel pump, i have an exaust pipe with inner diameter of about 58 mm and stock air filter. My turbo pressure gauge showing me maximum pressure of 0.3-0.4 bar and wastegate valve is always being closed.
What i have done wrong? Why my MB can't run like at least stock OM617 Turbo can run it?
Thank you for replies.

[MJF]

Hi!

Your problem is oversized turbo for rest of the build. You need much more fuel to spool HX35.

[sbo]

if i add more fuel by adjusting injection pump, without upgrading pump by bigger elements, will i get more changes?

[MJF]

I don't think you'll get enough fuel from stock pump.

[sbo]

thank you.

[Forced_Induction]

HX35 is much too large for an OM617 without a high output pump. You need an HX30 or HY30, anything larger will actually reduce performance (as you found out)!