Havok Engineering - Stage 2 R33 RB25DET ECU Upgrade Chip - FOR THE R33 ECU!! S14 as its impossible to fit

as its impossible to fit if the ECU has no eprom

and Series 1 or 2

and has been set at 5300 rpm

Tuned to approximately 340 - 350 hp (injectors and AFM are maxed)

these replace the stock chip with performance settings

Havok Engineering - Stage 2 R33 RB25DET ECU Upgrade Chip - FOR THE R33 ECU!! S14 as its impossible to fitThe Real Deal Havok Engineering tuned MCU upgrade for the Nissan Skyline R33 GTSt with an RB25DET. Designed to fit in the factory ECU, these replace the stock chip with performance settings. These are available in Automatic or Manual, and Series 1 or 2. The major problem with the R33 Skyline's ECU is its inability to handle modifications to the motor. The ECU easily revertes to "Rich and Retard" (R&R) mode, killing power, and efficiency. Features: