The Nissan Skyline developed a huge following in its native Japan and overseas due to appearances in the "Gran Turismo" line of video games. The relatively small RB series 2.6L-6-cylinder-DOHC (double overhead cam) turbocharged motor was mandated to have a maximum limit of 276 horsepower, however the real figure was closer to 320, as several GTRs were tested on dynamometers to acquire accurate baseline readings. The GTR's little brother (GTS-T) has a smaller motor but still manages to produce 215 horsepower in stock trim. Both of these engines run conservative boost levels from the factory, and can be fitted with a simple boost controller upgrade to unlock hidden power.
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Things you need
- Manual Boost Controller (MBC) Kit
Connect one end of the boost controller barb to the wastegate actuator with a vacuum hose.
Connect the other side to the boost outlet source, near the turbo compressor intake.
Attach the MBC with zip-ties (included in the kit) away from the turbine housing and exhaust manifold.
Turn the knob on the controller to adjust boost psi in the desired direction, and perform a full throttle run to get a reading on the boost gauge.
Fine-tune the controller to reach target level (no more than 12 psi on the stock Skyline fuel system).
Tips and warnings
- Supporting modifications such as intake, exhaust and bov (blow off valve) upgrades, will further increase power gains and minimise turbo-lag.
- Increasing boost past factory programmed settings can cause serious engine damage; proceed with caution.
- Use a private road or track for all testing.