Keep me updated. Mine started to do this over the weekend a couple times. I tried to get it to do it again after work today but couldnt replicate it. Mine usually happens pre-boost and sometimes in decel like yours.
FBO, with catless downpipes. I am thinking it is the turbine catching but. Similar to you, no heavy smoke coming out.
How many miles on your turbos?
__________________
Mine - 2008 E90 335i Black Sapphire Metallic 6MT | New OEM Turbos @ 111k| Cobb Stage 2 LT Sport | Full Stainless Steel Akrapovic Exhaust | 5'' Stepped FMIC | VRSF Catless Downpipes| 19in BBS CH-R Matte Black | aFe Stage 2 Air Intake and air scoops| Mishimoto OCC| M-Tech Front Bumper
|