I'm getting a dyno tune Wednesday and will post the data. I've read some comments about AFRs with my current set up being a potential problem. Some say with a dyno tune it is manageable and others are more in line with your comment. I will know more after the tune. Right now without the tune the car is really performing as compared to stock intake and pulley but I need data to see where I'm at. My 62mm pulley is EC but is not aluminum. It is an upgraded steel product they just started producing a few months ago. I don't have a saver kit and the stock belt was adequate. EC said they've sold 70 of them with no scattering or complaints with no slippage.. I'm in Tucson, AZ. We are about 1000ft above sea level. Its humid now so in November I will take it in for a retune. My dyno guy says he can manage the AFRs and I will see more torque gains than HP although he's done SRT6 crossfires before with similar mods and got good gains in HP. I will know more Wednesday and let you know how it comes out. As far as the DCAI not enough gains to justify the money. Port and polish the heads and hone the valve guides and there will be more than enough air moving.