Very nice, minimal overshoot and it looked like it ramped up pretty quick. The Greddy use a PWM solenoid like the MAC valves but you have it setup nicely. Well done. I know they are cheaper like $330-$350 as well. I'm partial to the HKS stuff but they are mega expensive, but I feel the stepper motor is superior under highly dynamic conditions. It's that roll-into boost at higher rpms where the boost spike can get intense or after a gear shift that the head unit and motor speed counts, but Greddy make some good product.