I currently have 1996 Cobra 4V with a 75 shot of nitrous and a Vortech pushing 12 pounds. After driving for a few months I have grown weary of the amount of time it takes my 3.73s to get me into my power band. I have been reading all over Google and haven't come up with a conclusion... I rarely drive on the freeway so revving isn't of much concern. I don't give a damn about gas, I have a high power V8. I am worried 4.10s might not be as big as a difference from 3.73s as I'd like. My car feels like a dog off the line for the power it makes. If a centri builds boost with RPM... I really don't know.