Here's my setup:

D16Z6 Head
D16A6 Block (stock pistons and rods)
D16Y8 Intake Manifold
Zex 59300 camshaft

OBD0-OBD1 Conversion (using jkobd harness)
P28 ECU
4-wire o2 sensor
OBD1 Distributor

Whenever I rev up the engine its fine. When it gets to around 4700-5k RPM I hear a strange clicking noise. I'm assuming its a broken VTEC solenoid or wutever. Let me know guys!

Thanks in advance,
Jon