I believe it's throttle position and rpm.

 

Looking at the Vtec parameters in the kmanager I can adjust the vtec for Lower/upper boundrary and engine load.

The load is expressed in a pressure. however I do not know if its absolute pressure or pressure above normal atmosphere pressure.

 

Ah, you have kpro. I can't speak to that. I'm sure you can configure which thresholds and parameters to use for the switchover.

 

Any more input on the absolute pressure or pressure over atmosphere part?

 

Would Hondata reflash with Toda header where Vtec engages @4200
instead of 6200 do any long-term damage/excessive wear to
engine and drivetrain?

For the cost the thought of earlier Vtec...much wider power band(4200-8500) and increase of HP by 23 and torque by 20 is very enticing!

Have to wonder if this flash eliminates top end limiter?

 

^^^ Anything that you do to increase power is going to increase wear on the whole drivetrain, but that is at the driver's control. Aside from that, engaging VTEC more often (since it engages lower) might shorten the life of the VTEC solenoid.

 

6500-7000 ..?

Woudln't that drop you out of VTEC between shifts?

 

If VTEC is set at the "right" spot, and the car is tuned, then there isn't really a penalty for falling out of VTEC. For my car, I have only about 15 ft-lbs of torque difference between 3500 RPMs and 6K RPMs.

 

Timg is right. Log mani u raise vtec. Falling out of it on log mani Turbo setup doesn't mean less power.

 

hmmmm I'm not a tuner. but my car i fall out of vtec.... and it feels like my car gets a big tq boost again when vtec engages again.

I feel like i'm loosing speed because of falling out of vtec...