If you could explain in detail Is it non responsive off idle when leaving a stop light idling at 600 rpm? or is it non responsive at the track leaving the tree staged at 2800 rpm and it falls on its face? Do you stomp it at idle and its sluggish till it hits 2500 rpm? If you could explain your engines problem better and exactly what its doing, it would sure help us trouble shoot its problem!
Are you on a tight budget? I'm asking because you bought a Jegs converter and small Summit 1 5/8" primary headers you should have installed 1 7/8"! So I'm thinking you might be scrapping dimes! Its not a bad thing trying to build to a budget
But it helps us when suggesting things if we know what kind of budget you have to afford the things like a dino session or a turn back dial!