Been doing some tuning on my new (to me) Impala... 2006 Impala with the 3.9L v6... I'm having a weird low speed rpm "surging" issue. I have a scan attached showing it in 2 different occurances. I'm most likely guessing it's because of the MAF Fuel adjustments that I've been doing, but I've just caught wind of this because I wasn't doing a live scan and just "black box" scan. In the scan the issues I recorded them at are around frame 4424 and frame 6901 it gets weird and worse as the scan shows. I'm guessing I should probably change the maf back slightly and retune it???? Thanks for advice if any given!