Quote:
Originally Posted by mikerbike
False. The reason the flapper is pushed open by the wastegate actuator is to CONTROL the speed of the turbine/compressor. I'm sure the flapper will be pushed open at idle if it's not connected. Sure, the turbo will spin, but not enough to build any boost against the charge piping/intake tract.
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Whats false about what he said its true. I doubt the flapper would even open at idle, at idle you can take yoru finger and stop the compressor wheel instantly. It will build some boost even with the flapper disconnected cause believe it or not the exit of the exhaust is still somewhat restricted and will spin the turbine fast enought to build a pound to two of boost.