Compressor surge is a phenomenon experienced when boost pressure inside the intake tract builds up and has no convenient relief method. This is usually caused from the throttle plate closing quickly. Changing load conditions (off throttle) resulting in varying amounts of exhaust gas can also simulate such conditions.
In such a case, the pressure takes the only way out through the turbocharger compressor housing. The unique sound is caused by the pressure charge encountering the spinning compressor wheel on its escape from the engine.
Compressor surge goes by many other names such as compressor stall, turbo dose or dosing, pigeon, turbo flutter/chatter and sometimes mistakenly wastegate chatter.
The car was thoroughly warmed up before filming. The boost controller has been disabled allowing the car to run directly off wastegate pressure. The body panels have been removed due to a slowly progressing facelift. For more info on my car:
www.fizzerkart.com/s14.html
Props to Salman, my cousin, for introducing me firsthand to this wonderful, ridiculous phenomenon and also to Quail from sxoc for doing this s**t ages before I did. ;-D
Tags: compressor surge turbo dose flutter dosing chatter stall 240sx 180sx 200sx s12 s14 s13 silvia sr20 sr20det bov t25 t25g
