Waddup yall , So my g8 gt ,When I drive it on D , daily it / or on freeway it seems/sounds like it burbles / pops as my foot is on the pedal accelerating lightly , and then on freeway it shakes and seems to be on 5 or 6th gear where it shakes pretty bad and feels like a weak gear . Like as if it struggles a bit . Tuner/mechanic did a log and checked everything on engine and it seems to be a healthy engine , no engine problems . Can u guys help
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