Does anyone have any suggestions when it comes to finding a tuner for my '06 sierra 4.8l? I have been reading and talking to a lot of people and wanted get ya'lls take on this. Is it even worth the money or are there products that will help with fuel mileage? I know bully dog and banks have the performance aspect mastered, but not sure on the tuning for better mpgs. Thoughts.
JD
JD