how does a butterfly intake manifold on gsr works?
They open up at about 5700...they are located in the intake manifold..and are pretty much used to restrict air and boost torque after vtec activation. They run off of a vaccum.

https://honda-tech.com/zerothread?id=919375
https://honda-tech.com/zerothread?id=405773
https://honda-tech.com/zerosearch <------ a very good resource
-Aaron

https://honda-tech.com/zerothread?id=919375
https://honda-tech.com/zerothread?id=405773
https://honda-tech.com/zerosearch <------ a very good resource
-Aaron
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