VTEC is developed by Honda whereas VVT-i is developed by Toyota. The VVTi only alters the timing while i-VTEC alters the timing as well as the lift of the valves. The VTEC makes changes to both, the intake and the exhaust valves. The VVTi technology on the other hand works only on the intake valve.
The Honda Vezel 2021 1.5L i-VTEC 4WD has a Inline 4, Petrol engine with 1496 cm3 / 91.3 cu-in capacity. How many horsepower (hp) does a 2021 Honda Vezel 2021 1.5L i-VTEC 4WD have? The 2021 Honda Vezel 2021 1.5L i-VTEC 4WD has 118 PS / 116 bhp / 87 kW.

The VTEC engine indeed was a watershed moment in automotive-engine history, because it was the first production engine with computer-controlled valve timing. Honda’s system included switchable cam-lobe profiles that essentially could cover two events: high rpm (power) and low rpm (fuel economy).

VTEC is Honda's variable valve technology used to change the amount of valve lift and valve duration in the engine. By altering valve lift and duration, you

checked VSS (signal)-> functioned (= I can see it at see stack display, signal comes from the ECU) did a oil and oil filter change with 10W60. checked VTEC strainer -> clean. checked oil pressure level -> between 3 and 5,5 bar (it is a SAE60 oil ) changed testwise the complete VTEC solenoid -> does also not work.

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how does a vtec engine work