MERCURY MARINE 496 STAGE 1 AND STAGE 2
 


Stage 1 $849.99
The Whipple Stage 1 system is a computer recalibration that increases the maximum rpm level while maintaining a conservative timing curve for 87-octane gas. This calibration is designed to be conservative and reliable like stock, but a higher maximum rpm level for more prop selection. Stage 1 achieves only modest power increases such as 15 foot-pounds of torque and 10 horsepower.

Key features:
• 5450 RPM limit
• 87 octane safe


Stage 2 $899.99
The Whipple stage 2 maximizes the power output of the stock engine by running 91 octane or better, increasing the maximum spark advance, increased ignition power from the individual coils, denser air charge from the low temp thermostat, maximized air-fuel ratio in each individual cylinder and increased air flow from the hi-flow filter. Calibration increases torque levels throughout the entire rpm curve while making more peak hp for increased speeds.

Key features:
• Hi-performance PCM calibration
• Low-temp thermostat
• 5450 RPM limit
• 7% - 10% power increase over stock
• Increased acceleration with increased torque output

OPTIONAL EQUIPMENT
Low temp thermostat (120) $ 89.95