The air diverter valve keeps the airflow velocity in the intake piping and prevents side loads on the turbo's bearings due to the rapid closing of the throttle plate.
Because our cars use a speed density system for calculating fuel injector duty cycle it is possible to vent to the atmosphere creating the sound that some like. On cars with mass airflow sensors the bypass/diverter/bov will need to vent back into the intake tract to avoid a rich mixture.
The valve is not really necessary for an automatic transmission turbo car because the throttle doesnt close during shifts.
i have recently installed a turbo on my '01 and all i can say is
rip the f out [8)] [?]
__________________
www.cardomain.com/id/rallydrock
|