Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - New in Louisiana

sjgrimsley · 02-24-2014, 04:16 PM

Thanks for the warm welcome. I didn't expect replies this soon. Lol

I run the front tires at 36, rears at 32. If I go any higher the ride is hell and the rears wear in the middle of the tread.

I can use a scan gauge it will show as a 2003 Corvette 5.7. But until I upgrade to LS3 injectors with known injector data for the PCM it will show mileage about 4mpg high. For now I check by the odometer. I have verified it with gps.

Point taken on the air dam vs. belly pan. If doing only one, which would make the most improvement?

My baseline average is 21 mpg about 75% highway. Goal is 28. Our '03 corvette coupe frequently knocks down 30-32 mpg in the same conditions. New Z06's frequently do 28 hwy.

The .70 OD and 3.23 rear end have me at 1600 rpm at 55 and 2100 rpm at 70. Planned is a 6L80 auto with .67 OD and 2.56 rear end. More fun and more fuel efficient.

I feel pretty confident with my hypermiling techniques. I took a 2011 Suburban 5.3L from Alexandria to Shreveport and averaged 28.8 mpg. It could have been better I'm sure but this was a bone stock vehicle.

Thanks again for the warm welcome, everyone.

02-24-2014, 04:16 PM	#8 (permalink)
sjgrimsley EcoModding Lurker Join Date: Feb 2014 Location: Louisiana Posts: 21 Trans Am - '82 Pontiac Firebird Trans Am 90 day: 20.84 mpg (US) Explorer - '95 Ford Explorer XLT 90 day: 19.02 mpg (US) Thanks: 2 Thanked 2 Times in 2 Posts	Thanks for the warm welcome. I didn't expect replies this soon. Lol I run the front tires at 36, rears at 32. If I go any higher the ride is hell and the rears wear in the middle of the tread. I can use a scan gauge it will show as a 2003 Corvette 5.7. But until I upgrade to LS3 injectors with known injector data for the PCM it will show mileage about 4mpg high. For now I check by the odometer. I have verified it with gps. Point taken on the air dam vs. belly pan. If doing only one, which would make the most improvement? My baseline average is 21 mpg about 75% highway. Goal is 28. Our '03 corvette coupe frequently knocks down 30-32 mpg in the same conditions. New Z06's frequently do 28 hwy. The .70 OD and 3.23 rear end have me at 1600 rpm at 55 and 2100 rpm at 70. Planned is a 6L80 auto with .67 OD and 2.56 rear end. More fun and more fuel efficient. I feel pretty confident with my hypermiling techniques. I took a 2011 Suburban 5.3L from Alexandria to Shreveport and averaged 28.8 mpg. It could have been better I'm sure but this was a bone stock vehicle. Thanks again for the warm welcome, everyone.