the throttle butterfly shouldn't restrict anything, it should move freely and adjust itself according to what the ECU tells it too
I'm not sure if we aren't talking about different things, when it comes to restriction - I'm referring to the flow restriction caused buy whats inside the housing of the EGR pipe
The throttle flap is a necessary minor obstacle
I wouldn't try and remove that .... your cars behaviour will be erratic to say the least with that gone !?
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