Re: 2.0TS manifold switching anyone?
Manifold is controlled by vacuum. There is a hose going from behind throttle body leading vacuum to the manifold actuator (simple piston in plastic housing) The actuator is controlled by solenoid, controlled by ECU. This means when the ECU gives signal, solenoid opens the vacuum applies to the piston and it shortens the manifold. You can switch it by hand to see how it works, and you can see it working when you rev your engine.
I am going to install variable manifold to 1,6TS because it is a straight fit and you need just a 12V switch to operate the solenoid based on revs and a remap that suits the new setup. You can bypass ECU this way.
Look at the picture, when you squeeze the actuator like me, you can control it by hand :-)
Most probably your actuator is stuck and you need really strong vacuum to work (high revs) or something is blocking the vacuum pipe, or maybe the solenoid needs change. It is not vary probable that your ECU decided alone that it would be better to open it later
147GTA,Grigio Metallico,Imola leather, 3.75l conversion,F360 TB,ported heads,Balduzzi cams,GTV manifolds,EQ pipes,Supersprint silenced cat back,18" GT multispokes,KW V3,Galfer 6pot 355mm,Brembo sport rear, Blaupunk NewYork 800 + Focal
147 1.6TS, Nerro,Beige Interior,Galfer Extreme Brake kit,2,0TS intake manifold,Custom ex. manifold,200CPI cat,Supersprint silenced center + OO backbox,GTA spoiler,GTA side skirts,GTA headlights,Blaupunkt LA MP74 + Focal + MacAudio + Dynamat + HERZ subwoofer