estas son las specs de los motores
D16Y9
equal to D16Y4 non VTEC
* Found in:
o 1996-2000 Honda Ballade, Honda Civic in South Africa and Venezuela
+ Displacement : 1,590 cc (97 cu in)
+ Bore and Stroke : 75 × 90 mm (3.0 × 3.5 in)
+ Power : 107hp (79.0 kW, 107 ps) @ 5900 rpm (At 110 hp (82 kW) @ 5500 rpm)
+ Torque : 108 ft·lbf (14.9 kg/m, 146 Nm) @ 4000 rpm
+ Valvetrain : SOHC (4 valves per cylinder)
+ Fuel Control : OBD2A MPFI
+ Redline : 7200 rpm
+ Rev-limiter: 7411 rpm
+ Valvetrain : SOHC (4 valves per cylinder)
+ Head Code : P2A-9
+ Piston Code : P2K
+ ECU Code : P2K 2 Connectors
o The D16Y9 in South Africa has different power figures:
+ Power: 89Kw (119 hp) @6400rpm
+ Torque: 146Nm (108 lbf-ft) @5500rpm
# Information found in April 1998 CAR Magazine(SA)
D15Z6
* SOHC VTEC
* Found in:
o 1995-2000 Honda Civic 1.5 iLS (European Market)
+ Displacement : 1,493 cc (91.1 cu in)
+ Bore and Stroke : 75 × 84.5 mm (3.0 × 3.33 in)
+ Rod Length : 137 mm
+ Compression : 9.6:1
+ Power : 114 hp (84 kW) @ 6500 rpm
+ Torque : 99 ft-lb (134 Nm) @ 5400 rpm
+ VTEC Switchover : depending on load, max ~3500 rpm in 5th gear
+ Valvetrain : SOHC VTEC (3-4 valves per cylinder, depending on rpm)
+ Fuel Control : OBD2a PGM-FI MPFI
+ Ecu Code : P2Y
+ Head Code : P2J
+ Redline : 6800Rpm
+ Fuel cutout : 7200Rpm
A mi cretirio lo que sucede es que si no cambiaste la ECU no te activara el vtec xq tu motor original no era vtec, busca el código de la ecu que tienes instalada.
saludos