Havok Engineering - Spec 1 R32 Skyline RB20DET ECU Upgrade Chip - 1 Bar!
Havok Engineering - Spec 2A R32 Skyline RB20DET ECU Upgrade Chip - RB25DET Turbo!
Havok Engineering - Spec 2B R32 Skyline RB20DET ECU Upgrade Chip - T3/T4 Turbo!
