Originally Posted by
m4tt274
it doesnt alter the spool times it just reduces the 'lag' when u put your foot back on the throttle. the DV lets all the compressed air out so it cant stall the turbo. allowing turbo chatter allows the air to stall the the compressor wheel meaning it has to spin back up again.
The turbo does not stall!! If that happened you'd have no exhaust gasses flowing out and the engine would stall!
....
Also you have to remember that when you dump your loosing all the charge air/pressure from your intake which the turbo then has to repressurise again... adding lag
So whats better??... Retain charge air/pressure or reduce spool up time? Both will slow down the time it takes to reach the desired boost pressure again after a gear change...
Hence the ongoing debate...