2011 f10 stage 2+. List of mods: upgrade intercooler, charge pipe, catless downpipe, colder plugs, all coil packs replaced, burger tuning intake, muffler delete with 3” straight pipe from y split to both sides. Also xhp stage 2. My idle has a lop to it like having cams. Idle needle on rpm doesn’t fluctuate at all. Car runs fine but the lop I can feel lettin off at idle sometimes. No misfires. No codes at all. I also reset adaptation after installing mods etc. any ideas what to look at? Thanks for any help.