vtec window question

[x6h0ztx]

can some1 explain the upper and lower boundary ? also the settings next to the rpm box. it has inches, mbar, bar, kpa, psi and kg/cm

[Luke]

the VTEC-window says, when VTEC can be activated or not.

example:
lower boundary: 4500rpm and 787mbar
upper boundary: 6000rpm and 653mbar
Minimum Throttle: 50% throttle
Minimum Speed: 15 kph
Minimum Temperature: 65°C

This means, that your VTEC can be engaged at 4500rpm, medium load (column 6, here) when you hit 50% of throttle, but if you don't hit 50% throttle and that load, your VTEC WON'T be engaged untill you are at 6000revs.
upper 6000rpm your VTEC will be engaged if you want or not.

this helps to earn more milage, for example or gain power, if possible and neccessary.

best regards Lukas

[x6h0ztx]

ahh, i get it... but what about the settings next to the vtec rpm settings?

[Luke]

that's the load index.

depending on how heavy the engine is loaded, the engine load rises. (running up a hill at a stable rpm, WOT or comparable)

that says just with is the minimum load (column in the table) when the VTEC engages ;)

best regards Lukas

[x6h0ztx]

thank you