|
Turbo AVCS/VVT settings
Starting a thread to discuss cam timing and optimization specific to Turbo use. Adjusting the cam overlap is critical to cylinder filling and evacuation. As Td-d has noted previously, small changes in overlap can result in large changes in knock.
I'm still playing with dialing in AVCS timing for the Greddy T518Z kit, but I did have a problematic knock area at 4800-5200 rpm which I think has been cured by reducing overlap by only 5 degrees without significantly affecting volumetric efficiency. My (unverifiable) suspicion is heat from exhaust reversion reduced the knock limit.
It will be interesting to see how forum members are setting up their turbo AVCS and also how our settings compare to the FA20DIT dual AVCS engines. Please share tables, results, and tuning theory. Previous threads in multiple forums by mad_sb, Kodename47, Td-d and arghx7 all noted with thanks.
|