need help for rpm sprinter edc15C6

[shepard47]

hello

I have a problem with sprinter 208 cdi 2.2l 90hp I have tune ecu and egr off

i test on road run nice but when the engine is idling there are tremors when i accelerate by 150 rpm more tremors disappears

I test many modified and i have already the problem tremors at idle
i have prog another engine gearbox mecanik and no problem

there is gearbox auto sprint shift

somebody can me help for increase engine speed by 150 or 200 rpm at idle
I test with more pressure rail not work with driver ecm official not work

thanks