Thread: VNT Turbo and Performance Mods - 300 Tdi

Originally Posted by Bush65

While vacuum actuators were used instead of boost pressure actuators for controlling VNT turbos for many years, it has been bought to my attention that the current trend is for electrical control (stepper motor or other form of servo motor).

It would depend on how the motor was linked to the vane mechanism as to how easy/difficult it would be to replace it with another actuator.


An alternative to teeing into the vacuum pump for the braking system, a small electric vacuum pump could be dedicated to the turbo. These come up on ebay from vehicles that use them for cruise control systems, etc.

The way you suggested earlier - in my opinion, the most elegant. It is easy to perform, not expensive, has two adjustments. I read reviews from Nissan owners forum - everyone is happy! So, I have no doubt how to act

Hi Jock.
I've just rejoined the forum and I'm very interested to know if you still have the vehicle and what are your thoughts on the M&D Engineering VNT Turbo Setup so far.

Is it worth the upgrade?

I'm looking at their Kit #32 for my Discovery 1.

Khosrow