A/R Ratio is the ratio of internal to brag isthmus exhaust determines speed of rotation of the exhaust turbine which affect the boost that will come quickly or slowly.
A / R Ratio is the ratio bottleneck within the exhaust. Determines the speed of rotation of the turbine exhaust. It affects the boost that will come sooner or later.
A / R Ratio is isthmus within exhaust pass ratio Determine the speed of rotation of the turbine exhaust. , which affect boost that will come sooner or later.