ViPEC has produced replacement ECU boards and adaptors for the original ECU on FJ25T engines with AVCC (variable valve timing). The replacement board is based on the V88 ECU which can control the electronic throttle and the AVCC. This version is thus suitable for the 2.5L US spec WRX, including the STi models.
The original motherboard and connector are removed from the ECU case, and the ViPEC motherboard and connector clip or screw into the case. The original harness plugs in and the job is done - no wiring is necessary and all original sensors are used. External view of ECU case and connector is unchanged from its stock appearance.
Considerable gains in power across the complete RPM range can be achieved with these boards. Both road car and Group N rally car versions are available.
The ECU allows full control over fuel, ignition timing, boost pressure and all other engine functions. All boards have QuickTune software and optional Anti-lag.
All boards are supplied with base programs are available. Some final tuning will be required.
For more details, see the ViPEC website or call us.
