OP
OP
- Thread starter
- #46
Session 15: The bottleneck isn't always where people think it is.
A larger intake only helps if something downstream can actually use the additional airflow. At some point, another component becomes the restriction.
That restriction might be the throttle body inlet. It might be the turbocharger itself.
Recent testing I performed showed something interesting: despite a much larger 5" intake design, gains over other systems became very small on stock mapping. That suggests the intake may no longer be the limiting factor at that power level.
Once other airflow restrictions are raised, the turbo itself may become the bottleneck.
We also saw a noticeable gain from a high-flow catted downpipe—which points toward the system working as a whole, not just one part.
Next on the list: throttle body inlet testing and eventually another turbo. @SXTH Element hurry up!
Airflow is a chain. The weakest link changes as power goes up.
Link to intake dyno testing thread
A larger intake only helps if something downstream can actually use the additional airflow. At some point, another component becomes the restriction.
That restriction might be the throttle body inlet. It might be the turbocharger itself.
Recent testing I performed showed something interesting: despite a much larger 5" intake design, gains over other systems became very small on stock mapping. That suggests the intake may no longer be the limiting factor at that power level.
Once other airflow restrictions are raised, the turbo itself may become the bottleneck.
We also saw a noticeable gain from a high-flow catted downpipe—which points toward the system working as a whole, not just one part.
Next on the list: throttle body inlet testing and eventually another turbo. @SXTH Element hurry up!
Airflow is a chain. The weakest link changes as power goes up.
Link to intake dyno testing thread
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