difference between i vtec and vtec

[fai]

hello people wat the difference between ivtec and vtec :p

[EuroDude]

An i-VTEC engine has two VTEC functions:

1) The normal VTEC system which engages the high output CAM lobes at a fixed RPM (same as a B16A for example). The ECU cannot change the engagement RPM, but it can choose not to engage VTEC if, for example, the oil pressure is too low.

2) VTC: The ECU can change the CAM gear angle to "fine tune" the valve timing. This means the ECU can let more fuel and air in to gain power at high RPM or hard acceleration, or decrease the fuel and air for economy or low RPM torque. This function is variable and not necessarily dependent on the RPM. The ECU decides what angle is most beneficial depending on numerous variables.

More info here http://asia.vtec.net/article/ivtec/

[minix33]

one simple equation

iVTEC = VTEC + VTC (variable overlap timing control)

[Cold Fusion]

one is like, an information booklet, the other is the actual thing

[sam.]

from what i can tell, ivtec is for economy, vtec is for POWAAAAAAAAA!

[mrwillz]

http://www.ozhonda.com/forum/forumdisplay.php?f=42
Knowledge base ftw