I finally got my wastegate to stop creeping, and got my car running nicely except that I don't think VTEC is coming on... the car is pretty slow for 7psi (as slow as stock). I haven't checked the wire(s) yet to see if they're getting power, I'll be doing that this weekend.

In the event that I find that VTEC isn't coming on, what are the causes? Bad Coolant Temp sensor? Anything else?

 

oil pressure, water temp, throttle, bunch of other things

 

Oil Pressure... not sure.
Water Temp - Car was up to temp.
Throttle - WOT.

Any other possibilities?

 

If your oil pressure doesn't get high enough the VTEC won't come on.

 

In order for the ECU to initiate the VTEC system, 5 engine conditions must be met.

Temperature: The engine must have reached normal operating temperature.

Throttle Position: The throttle must be open far enough to allow for increased airflow in VTEC.

Vehicle Speed: The car must be in motion (wheels spinning).

RPM: Engine must spin to it's target value. The GS-R will send it's "GO" signal for VTEC at 4400 RPM while the Type R sends it's signal at 5700 RPM.

Oil Pressure: The engine must be operating with normal and safe levels of oil pressure determined by the VTEC pressure switch.

The ECU will send a signal for a spool valve to open. When this valve opens, oil is allowed into the pivot shaft inside the valve rockers and directed into the center rocker. Inside the center rocker, a set of pins are forced outward by the oil pressure and lock inside the rockers to both sides. This entire process occurs in 1/10 of a second.

- Taken from the Team-Integra.net articles

 

Your speedometer must be conected and working right, if it's not then v-tec will not engage, that's from my own experience.

 

Thanks Chris.