The APR Stage II ECU Upgrade is the next step towards making more power! This upgrade requires a high flow downpipe exhaust system, and produces 400-420 HP with 520-550NM of torque.
The upgrade is offered in high, medium and low torque versions, and is available for various fuel grades. The high torque upgrade requires, and the medium torque upgrade may require the APR TCU upgrade to avoid clutch slip, so low torque software is available.
An upgraded intake is required to meet the advertised low and medium output power figures, and an upgraded intercooler is required to meet the high output power figures. No ECU modification is necessary to run an upgraded catback exhaust system, or other small engine modifications. For best results, APR recommends Denso IKH24 spark plugs with a .024” +/- .002” gap.
Please note that if you already have APR stage 1 and purchase the APR cast downpipe it is a free upgrade to stage 2 software.