Double Throttle

[BlitzBoy]

Hey guys just removed the double throttle off the extension manifold, let me tell you the car seems to rev/breathe a little better, the throttle response a tad sharper , must be because the inlet tract seems to be clearer and flow better with the secondary butterflies not being there, anyone else found this?

Also had a look at the location of the injectors when the extension manifold was off, they seem to be hidden from view by a valve of some kind, anyone know what it is or had experiance of changing the injectors on this car and the best procedure of removal and fitting