I just completed my I/H/E upgrades. I've got the V2 intake, Megan header, and Tsudo exhaust. I also put in a set of Denso Iridium plugs. What other steps can I take to get more power without getting into forced induction as this is my daily driver. I don't necessarily mean bolt ons, but anything. I'm thinking my next step will be an Apexi VAFC 2. And maybe after that a cam/cam gear upgrade. Does that sound like a good plan?

Can anyone give me any suggestions as to what I should do next?

How much HP do you think I could get without getting into forced induction with my D17A2??