I threw the ATS in earlier in the week as I couldn't wait to feel the change. Already had filter, PC-V and the like installed. Friday I had some drop in cams installed and until the upper RPMs, no change. I do have the stage 1 mufflers installed (for now) but there is more torque and HP to be had in the mid range with a muffler upgrade. My peak numbers rounded off are 106/106. Will scan and post dyno sheet later. A bit surprised a free flowing muffler under performed so much. I guess the 1.75" diameter is a bit too small.