Quote:
Originally Posted by Rversteeg
A manual boost controller (MBC) is simply a spring loaded valve. It prevents the manifold pressure from reaching the original wastegate actuator (WGA) until the pressure is high enough to overcome the preload of the MBC spring. The preload is adjustable and should be set higher than the WGA spring. With the MBC set in series with the WGA the highest pressure setting determines the maximum tubo pressure.
The MBC setting is done with a pressure gauge and can only be done under the bonnet.
Your electronic boost controller (EBC) is a bit more sphisticated and uses a valve that is electrically controlled instead of by a spring. The pressure is measured by a pressure sensor and can be manipulated in more ways, even during driving. The principle is the same though: an additional valve in series with the original WGA.
In both cases it is not necessary to fiddle with the original WGA spring as the actual maximum turbo pressure is determined by the additional MBC/EBC. Simply cut the small rubber hose that runs to the WGA and add an MBC or EBC in between. As the hose is quite short, I disconnected the hose on one side, added an MBC and reconnected it by using an additional 20 cm of hose. Piece of cake, takes no more than 10 minutes.
|
You’ve made me realise that I was being dumb as I’m trying to run 1.2 bar and have a 1.2 bar wastegate actuator spring so I could’ve just run a hose from the wastegate actuator to the turbo housing so thanks for that.