My secondaries were supposedly already open at the top end (using TuneEcu) but the knee was still there. Anyway, after handing my Rocket over to our regional tuning kaiser, the knee was gone.
So I am not really sure, maybe I didn't get it quite right with TuneEcu on the first hand.
Good info. I have a tuneecu cable, but have never hooked it up yet. I bought an auto tune also, which isn't on the Rocket yet either. My plan was to open the secondaries at the top end and anywhere else they are closed, except the bottom end of first, as I don't like too much drama at parking lot speeds. Debating about a crossover, a crossover plus CES headers, CES full exhaust, or a Carpenter pipe. The RX-4040's also look interesting. Then I would get it re-dyno'd in the end.
I respectfully agree, but it's frequently easier said than done. It's also a matter of how motivated you are to get these mods done right. Like driving 600 miles and staying over night in another state was not my cup of tea.