Hey guys new to the forum here and this is my first post. I recently deleted my 2016 ram 2500. I also have the 4" flo pro exhaust with a muffler and an S&B filter. I got my tunes through Ray at Double R Diesel and am currently using the MM3 tuner. While idling the truck has a small drop in the rpm's for just a second. The drop is less than 100 rpm's. It does it with each of the tunes. I have contacted Ray and he said it was possibly the AC, i was just curious if anyone else was noticing this on their trucks. I tried watching other trucks tuned with mm3 tuners on youtube but have not been able to find one doing the same thing. I will try to get a video of at some point and post it.