I tuned and deleted my 2018 to the muffler and I was averaging 26mpg. Now a couple of weeks ago I deleted my muffler but now it seems like I lost fuel mileage. Now has anyone else noticed that? Or will it take some time for the ECM to "relearn" and gain that back? Or does the Ecodiesel need some...
I tuned and deleted my 2018 to the muffler and I was averaging 26mpg. Now a couple of weeks ago I deleted my muffler but now it seems like I lost fuel mileage. Now has anyone else noticed that? Or will it take some time for the ECM to "relearn" and gain that back? Or does the Ecodiesel need...