Backpressure does not create torque. Poor exhaust velocity (too large of piping) creates a lack of torque.


Dave

96 Maxima SE
14.45@99.51mph with a 2.316 60'

JDM intake manifold, JWT ECU, Y-pipe, UDP, hacked stock airbox, 2K Maxima muffler

 

thanks for the correction, meant backpressure created through a desired amount of controlled resistance, or velocity. Too little resistance can reduce velocity from my understanding.