Relationship Between Length Intake Manifold with Torsion

short→ length

Usually racing mechanics make her to pursue a short intake rate and fuel gas into the combustion chamber faster. Actually it is a way to get greater torque at high RPM, not to pursue the spontaneous acceleration.
Depending on the needs of the intake is also where we are going to select. If you want economical and just stop n go as often jammed, just select the length of the intake manifold. Intake length giving torque at lower to middle rounds. If you would like speeding or having a certain drag, or also want long-distance touring, select only a short intake manifold. Short intake gives greater torque than the length of the intake, but it appears when the lap top.
The following graphs the relationship between the length of the intake with a torque that has been studied previously.

graphic comparison only