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I have a 05 sierra durmax and lately i have been getting very poor mileage. ( just over 300kms a tank) I drive 60kms to work every morning and back 5 days a week. So I don't consider that in town driving. It still starts fnie and everything. But there is a point around 2100-2500rpm and the engine doesn't sound good. I have a banks 6-gun with PDA, do you think that would get a code or something about a blown injector?
Sorry Im just trying to get a little better mileage thats all! :(
 

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Try unhooking the Banks and see what happens.
 

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Ryan001;1558933; said:
I have a 05 sierra durmax and lately i have been getting very poor mileage. ( just over 300kms a tank) I drive 60kms to work every morning and back 5 days a week. So I don't consider that in town driving. It still starts fnie and everything. But there is a point around 2100-2500rpm and the engine doesn't sound good. I have a banks 6-gun with PDA, do you think that would get a code or something about a blown injector?
Sorry Im just trying to get a little better mileage thats all! :(
Could the 2100-2500rpms you are referring to be the pilot injection. Sounds more "clattery" when it shuts off.
 
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