K. Sally, all you need is the size of three sections of piping, called the "primary", "secondary" and the "collector" and their lengths... once you have these measurements then any header shop can make one for you... the design doesn not have to be the same, but the pipe diameter and length must be the same... primary pipes must all be the same length for 4 cylinder cars... secondary pipe length may be tuned for low poer high torque (longer) or low torque high power (shorter). Our cars are heave and redlines early, so Mercedes benefit more from high torque than high power. Japanese cars are light and likes to rev high... therefore they like high power with little torque.
Don't be confused by HP and Torque... when you feel a powerful car take off... you are feeling torque... you cannot feel HP because a car can only produce torque, not HP.... HP is a rating system based on torque (an SAE mathematical formula) to get a number that most people can "talk" about.
Simply.... HP is your MAXIMUM speed (eg. 100 KM/H) and torque is how fast you get there (eg. 6 seconds)... for example if you had a car (car A) with 300 Nm torque and 150 HP and another car (Car B) with 150Nm and 300 HP, then car A will accellerate faster than car B (0-100 KM/H car A is much faster), but car B will have a higher top speed. This is why the new Isuzu D-Max and Toyota Vigo are so fast in first and second gear... they only have 160 HP but being direct injection diesels they have AMAZING torque! But at top speed we can pass them easily.
K. Sally, all you need is the size of three sections of piping, called the "primary", "secondary" and the "collector" and their lengths... once you have these measurements then any header shop can make one for you... the design doesn not have to be the same, but the pipe diameter and length must be the same... primary pipes must all be the same length for 4 cylinder cars... secondary pipe length may be tuned for low poer high torque (longer) or low torque high power (shorter). Our cars are heave and redlines early, so Mercedes benefit more from high torque than high power. Japanese cars are light and likes to rev high... therefore they like high power with little torque.Don't be confused by HP and Torque... when you feel a powerful car take off... you are feeling torque... you cannot feel HP because a car can only produce torque, not HP.... HP is a rating system based on torque (an SAE mathematical formula) to get a number that most people can "talk" about.Simply.... HP is your MAXIMUM speed (eg. 100 KM/H) and torque is how fast you get there (eg. 6 seconds)... for example if you had a car (car A) with 300 Nm torque and 150 HP and another car (Car B) with 150Nm and 300 HP, then car A will accellerate faster than car B (0-100 KM/H car A is much faster), but car B will have a higher top speed. This is why the new Isuzu D-Max and Toyota Vigo are so fast in first and second gear... they only have 160 HP but being direct injection diesels they have AMAZING torque! But at top speed we can pass them easily.
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