:?, well, the issue is, i install the tune from the tool. it shows me 3,
1) Diablotune
2) mpg booster, or similiar i dont remeber,
3) Modify original tune

I install the first one, and it install but the vehicle (Silverado 2011, 5.3L, 6l80e tranny) is still like stock, its limited at 160km/h.
But ...

Hi guys, i am looking the 9r27 firmware version. I recently updated my u7194 with 9r31 (Yes i know and old tool) but i dont know why my truck runs like there is not intalled tune (like stock). With the 9r27 version works very well. . I hope you can help me.