I think I prefer the spool characteristics of the non-vtec heads over the vtec heads. The non vtec was consistent, smooth and linear and spooled much sooner than the z6 head at 2.5k. There's no one home below 3k on the z6 and then boost hits hard at approx 4k. I was under the assumption that with my c/r bump I would get a little faster spool, or is this just a result of the low cam vs high cam on the vtec head? What are everybody else's thoughts on this?