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Discussion Starter #1
Ok currently I have a Y4 throttle body on my Y8 turbo charged engine. atm it is still untuned and its idling up and down (i think its cuase its still untuned?) however someone said it might be due to the throttle body im using. I just want to know if there is acturlly a difference between the Y4 and the Y8 throttle body and what is it? could this be cuasing my idling problem?
 

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honestly i can't even find the size of that tb (y4). if there is a difference it is size.

your tune's idle control and base idle (through the air bypass/bleed screw) have not been set/set correctly, and that is why you are having idling issues.
 

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Discussion Starter #3
yeah i might have another play with it tonight, it starts to have problems when the engine is warmed up
 

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Discussion Starter #6
yeah im from aussie land. use to have a y4 but have done a conversin to a y8
 
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