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these replace the stock chip with performance settings
No Boost controller is needed
and has been set at 5300 rpm
Tuned to approximately 340 - 350 hp (injectors and AFM are maxed)
Tuned to run approximately 330 hp
Havok Engineering - Stage 2 R33 RB25DET ECU Upgrade Chip - FOR THE R33 ECU!! S14 these replace the stock chipThe 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: