E300TD turbo boost tweaking, possible? - PeachParts Mercedes-Benz Forum

Olivier · #1 08-29-2009, 06:25 PM

Thank you, I look at it tommorrow a little closer, if I take the vaccum out, would that mean that the waste gate would be all close, or all open?
A wee confuse on this.
How about changing the spring on the valve for a stronger one, to delay the opening ( this if the gate is opening to let the pressure out), or the oposite , a stronger spring if the gate need to be shut for longer?
Thank you.
Olivier

auspumpen · #2 08-29-2009, 10:48 PM

Quote:

Originally Posted by Olivier

Thank you, I look at it tommorrow a little closer, if I take the vaccum out, would that mean that the waste gate would be all close, or all open?
A wee confuse on this.
How about changing the spring on the valve for a stronger one, to delay the opening ( this if the gate is opening to let the pressure out), or the oposite , a stronger spring if the gate need to be shut for longer?
Thank you.
Olivier

You can't really adjust the vacuum actuator (if you remove vacuum, the wastegate will always be open --> no boost ever). The best you can do is replace that unit for a pressure actuated version and then add on a boost controller, which will allow you to custom set your wastegate opening pressures. Having said that, I wouldn't evem bother with the tiny stock turbo MB installed on these; they have a rather narrow efficiency range, so adjusting it will probably just be counterproductive.