How much can the torque (horsepower) be improved by replacing the throttle with a large throttle and replacing it with a set of front, middle and tail of Boulder?

In terms of air intake, simply increasing the throttle can hardly improve the air intake. If Cosworth or K &；; N's high flow air filtration may be slightly better. At the same time, the so-called electronic throttle is nothing more than opening the throttle at any pedal depth (that is, this thing is nothing more than turning the car into a big foot throttle under any circumstances, which not only does not improve performance, but increases the fuel consumption and driving difficulty on weekdays).

Therefore, I am afraid that only by modifying the exhaust can we really improve the high-speed performance. Even if the ECU is rewritten in order to make full use of it, the horsepower can be increased by 5- 10hp at most, and some low-speed torque may be lost at the same time (if it is in a straight row).