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It really depends on your model of Corvette. My experience is with C4's (1984 - 1996), specifically my 1988 35th Anniversary. When I purchased this car I was getting 10.8 - 11.2 mpg in the city and about 15 mpg highway.
Current Modifications are...
- Replaced stock filter with K&N Filter
- Replaced Stock power Coupler with Aftermarket (Rippled to Smooth)
- Installed Airfoil on Throttlebody Intake
- Installed Air Intake Temperature Sensor Relocation Kit (Pre 1989)
My fuel logs for last year of driving (1300 miles) shows that I am getting 16.3 mpg city and up to 25 mpg highway (@60 MPH, flat), 22 MPG Average Highway
I have not changed the Chip, Plugs, Wires, or any other modifications.
Other modifications I plan that will also increase MPG is
- Port/Polish Intake Runners
- Performance High Flow Injectors
- Performance Mass Airflow Sensor (Adjustable)
- Performance Fuel Regulator (Adjust fuel rate)
- Quad Titanium Spark Plugs
- Upgrade all Pullys to Aluminum with better ratio
All this will give you easily about another 100 HP, keep your foot out of it and you can tack on about another 10% MPG increase
Wiki User
∙ 15y ago
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