Few things to get us started:
'15 M4 ~70k miles now
Pure Stage 2+ (~1500 miles on them maybe)
VRSF catless downpipes
VRSF single mid
F80Paul flex-fuel tune for E50 (currently running E50)
Bend Calibration ultimate flex-fuel kit
Juuust started to notice this happening on the very cold first start of the day and/or after sitting for longer periods of time. Doesn't seem to happen if it's a few hours - seems to be like.. overnight.
It doesn't immediately puff out smoke, but after a few seconds I get a little cloud and that's usually it. It blows on by the car and then it's done. Trying to toss little revs/etc doesn't generate any additional smoke. It's not a giant cloud, but it's quite noticeable.
I spoke with my local shop, who recommended I talk to Paul (which I have) but I wanted to go ahead and make the thread in case this ended up being helpful for someone else later.
Once I run through this E50 i'm going to bump down to 93 and see if it still happens on pump, and if so, i'll try an OTS map for a baseline to see if they all smoke. Then we can eliminate tuning as a variable and point to a hardware issue somewhere.
Smokey idle:
https://www.bootmod3.net/log?id=61c4...0b434070142401
Not smokey idle:
https://www.bootmod3.net/log?id=61c5...0b433febe9deb0
Cloud is.. grey-ish. Definitely not white, not super dark, so it feels like it's maybe oil? I continue to check the oil level and it's fine every single time.