installed skunk2 stage2 cams in my b16 and now i have a problem engaging in vtec. right at 5500 rpm it boggs and falls on its face... any help out there?

FYI
I have skunk2 valve spring and retaners. the head has recently been machined and im also running a skunk2 intake manifold. stock intake and exhaust.

Any suggestions or advise is welcomed