VTEC Parameters

This tab contains parameters for setting the VTEC point & window.

VTEC Options

Enable VTEC for VTEC engines, disable for non-VTEC engines.

For JDM engines and JDM ECUs disable the VTEC oil pressure sensor.

VTEC Window

The VTEC window is a variable VTEC switch point based on engine speed and engine load. Usually you want the VTEC point to move higher with lighter engine load. The above screen shot shows VTEC switching at 5000 rpm when the manifold pressure is 5 inches vacuum or above (which is close to full throttle), reducing in a linear fashion at 6000 rpm to 15 inches manifold vacuum.

To disable the VTEC minimum speed test set the speed to 0.

Do not set the VTEC switch point too low as there will be insufficient oil pressure for the rest of the engine. As a guide do not go below 2000 rpm.

Do not set the VTEC switch point too high as the high speed rocker arm will float on the lost motion spring and damage the valve train. As a guide do not set the VTEC point higher than 6500 rpm.

VTEC Output

This is an additional output, switched at the same time as VTEC, for non-VTEC ECUs which do not have the VTEC output circuitry.  Note that on all outputs a relay should be used.

PR4:

P06:

P05:

P75:

Secondary Intake Runner Options

The option is only used for engines with secondary intake runners.

It is possible to use another output for the IABs if the ECU does not have circuitry to support IABs from the original pin.