On the 2002 VFR model, the transition from two to four, and then from four to two valves, took place at precisely 6,800 rpm, and manifested itself upon acceleration by a funny little turbo effect, accompanied by a pleasant change of tone. Nevertheless, in the end, this VTEC sometimes had the disadvantage of making its presence felt too much, particularly when the rider was cruising along the motorway at an engine speed fluctuating around 7,000 rpm. Then, the V4 seemed to hesitate and this translated into jolts.
This little foible has now been forgotten thanks to a reconfigured system. Upon acceleration, the transition to four valves now happens at 6,600 rpm, while upon deceleration the return to two valves takes place at a different engine speed (6,100 rpm). This extended transition phase, accompanied by a new electronic injection configuration, makes for effectively more discreet VTEC operation. These modifications have also enabled a reduction of fuel consumption by 1 l/100 km, and make the engine Euro 3 emissions compliant.