Following!Thanks, Stilo. I think at the moment I'm leaning towards the 3rd gen intake on intake and 2nd gen intake on exhaust as that is what Sam Wiest recommended and he seems to have tried it (although not necessarily on a 3rd gen engine). If I give it a shot, I'll report back with results. I'm going to the tuner to get a base dyno the first weekend in December and will also have a dyno run for the full M4 exhaust to compare to the one M4 has on their website. Should be fun!