Hey Thomas! I have a 84 Cali 300CD, I too have the ARV but no trap ox. I am wondering how is better, with it working or without to be working. I would like to increase the get up and go since the turbo kicks in like around 2400-2500 and according to me it should kick in earlier. If I block this ARV not to open, can I expect a better turbo get up and go a.k.a kicking in sooner. I have the garret turbo. Maybe if I adjust the wastegate I can make it kick in earlier like it should? any answers are welcomed, i love this forum!