Last night I pulled my Hallman MBC and switched to the Utec bleed valve. I can not explain this, but the car is idling like stock again. I have cams and the car idled OK but now it feels like stock. No kidding. The only other thing that I did was I forgot to re-connect the harness for the MAF. I started the car and it ran like crap. It took me about 5 seconds to figure out what I did. I then re-connected the sensor and restarted the car. I was shocked at how well it idled. Any theories?