16hp but at what RPM?

are we talkin about Peak Power?

raising or lowering the vtec point will not gain you anything in "peak" power

how ever it will make engagement into vtec smoother

lowering vtec to 4200-4500 will create this HP hump at that RPM range and the power will then drop off

when people lower the vtec and claim it feels faster its because they feel that hump and then it slows down then it picks back up thus "it feeels faster"

16 hp on a stock motor? No

3-5hp maybe but then it will lose 6-7