Truck is a 06 LLY with LBZ flash 12606128
s&b intake
egr block plate and turned off
DE downpipe
4"
pcv re routed
amsoil fuel additives every tank
seems like no matter what i can do i can only squeeze 13-16mpg out of the truck, 265/75 tires on stock wheels, on hwy i always set cruise around 70-73 1800-1900 rpm
Tried a few different tunes but just not having luck, i know alot of guys with lbz guys easily getting 17-20 with mostly hwy, my last all hwy tank was like 15.8 hand calc
Speedo is dead on with GPS
Truck does have 205k miles but it runs pretty smooth has plenty of power, balance rates on injectors are all close and low #
I just dont really know what else to do or try, been debating getting a tune from nick@duramax tuner or rob but just dont wanna spend bunch of extra money on tunes and not even know if its gonna help the mileage
maybe the motor is tired?, turbo has minimal play, i keep up on all my fluids, doesnt smoke or anything and im very easy on the throttle
I know i cant expect mileage of a car or anything but with fuel prices being 4$ a gallon even 2 more mpg would help a ton, i always see guys claiming 24 + but i just think that is complete BS
any suggestions would be greatly appreciated
s&b intake
egr block plate and turned off
DE downpipe
4"
pcv re routed
amsoil fuel additives every tank
seems like no matter what i can do i can only squeeze 13-16mpg out of the truck, 265/75 tires on stock wheels, on hwy i always set cruise around 70-73 1800-1900 rpm
Tried a few different tunes but just not having luck, i know alot of guys with lbz guys easily getting 17-20 with mostly hwy, my last all hwy tank was like 15.8 hand calc
Speedo is dead on with GPS
Truck does have 205k miles but it runs pretty smooth has plenty of power, balance rates on injectors are all close and low #
I just dont really know what else to do or try, been debating getting a tune from nick@duramax tuner or rob but just dont wanna spend bunch of extra money on tunes and not even know if its gonna help the mileage
maybe the motor is tired?, turbo has minimal play, i keep up on all my fluids, doesnt smoke or anything and im very easy on the throttle
I know i cant expect mileage of a car or anything but with fuel prices being 4$ a gallon even 2 more mpg would help a ton, i always see guys claiming 24 + but i just think that is complete BS
any suggestions would be greatly appreciated