I plan on cleaning up/smoothing out the manifold. It's a new batch, I know that because I had to wait a month for it to ship. Maybe they have fixed the poor manufacturing. We'll see. I'll be using a twin 67mm throttle body and the Ford Racing CAI. Got the package from CFM.
Give it some more time and miles. I thought I had made a mistake when I had a Mach 500 installed. Same issues you are having. Now it is smooth as silk. I would say it took at least 2,000 miles to fully break in.
I don't think a civilian can pull in for a fill up. I may have to enlist. Great numbers! Good to know that Shaun can tune from TMS. When I install a CJ intake I plan on having him do the tune.
I would look at the Magnaflow Xpipes. They have one with high flow cats for off road only and the other is 49 state legal which I assume would be quieter but I don't know how it would hold up to boost. I haven't used them but have seen them and they are a quality piece. I have read that their...