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The Whipple Stage 2 system for Mercury Racing 1025/1075SCI engines boasts even more power than Stage 1 by removing the stock camshaft and valve springs for a more agressive setup that works best with the supercharger system. The results are an astounding 100HP and 100 pounds of torque more than stock. The factory rpm limiter is also increased, giving customers the ability to greatly increase top speed MPH while running original props. The stock RPM limit of 6200 is modified to 6800rpm where peak power ends. Key features: 1. Over 100HP gain which equates to 5-10mph** increases 2. Hi-performance PCM calibration 3. Hi-performance special grind camshaft 4. Isky tool room valve springs 5. Increased horsepower for increased top speed MPH 6. Increased low-speed torque for decreased plane time 7. Increased low, mid and high speed torque for better acceleration and throttle response 8. Increased spark at low and mid speeds for increased engine efficiency 9. 6800 RPM limit vs. stock 6200 RPM limit giving increased propping range and increased horsepower 10. 91 octane safe (RON+MON)/2 11. Stock idle, starting and drive-ability is maintained




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