21-05-2012, 09:46 AM
The problem with a mechanical linkage is that it has no concept of time, it's not smooth in the slightest and will leave you with a car that is only good for one application... Either cruising or blatting it...
For example, the controller I use has a function that times the throttle, as in trailing throttle conditions you want it to be in full spool position constantly, trying to achieve as much boost as is available/allowed for a given RPM... But under that trailing throttle you might find that that's the exact throttle position for cruising, so it's adaptive to your driving style, if the RPMs stay within a certain window and the throttle position stays within a certain window for a certain time frame, it'll allow it to go into cruising mode...
Also I've got a condition where above 1500RPM and at 0% TPS it'll go into full closed mode, this massively helps engine braking, but I have the ability to adjust this so I can control the amount of engine braking... They're not just for quick spooling, there's so many advantages to them, by just having a rod/linkage setup, you may as well just grab a normal WG turbo... You've got to think of the exhaust side as well as the inlet side as it's variable, so can make your engine a totally different beast by just changing the vane position.
IMHO anyway.
For example, the controller I use has a function that times the throttle, as in trailing throttle conditions you want it to be in full spool position constantly, trying to achieve as much boost as is available/allowed for a given RPM... But under that trailing throttle you might find that that's the exact throttle position for cruising, so it's adaptive to your driving style, if the RPMs stay within a certain window and the throttle position stays within a certain window for a certain time frame, it'll allow it to go into cruising mode...
Also I've got a condition where above 1500RPM and at 0% TPS it'll go into full closed mode, this massively helps engine braking, but I have the ability to adjust this so I can control the amount of engine braking... They're not just for quick spooling, there's so many advantages to them, by just having a rod/linkage setup, you may as well just grab a normal WG turbo... You've got to think of the exhaust side as well as the inlet side as it's variable, so can make your engine a totally different beast by just changing the vane position.
IMHO anyway.
