Hello all, I have a bone stock 2015 GT, which I purchased used. Long story short, I have been to the dealership with this issue, and they are of the opinion that nothing is wrong (go figure). In order to find the issue, i have purchased a tuner in order to datalog and look at the files. I have the following issues (which are intermittent): -surging/hesitation under WOT -surging/hesitation under part throttle -weak power under WOT Attached is a log file. I'm trying to determine if anything can be seen by this file, or if the previous owner may have tuned the car and did not return it to stock. I assume bank1 is driver's side and bank2 is passenger side? It appears in the logs that bank2 is doing nothing in comparison with bank 1. It also appears that there are discontinuities in the maf frequency. Shown below is the bank2 curve compared with the bank1 curve. Any help is extremely appreciated!