Hello, I recently just purchased a Silver 04 S60 R 6 speed manual trans with 145k miles. The car ran a little rough so I did a stage 0 and swapped the spark plugs, coil packs, changed the oil, and have babied it since I bought it. I have put on IPD engine and transmission mounts, Obx downpipe, and cut off the muffler so it is straight piped. The car now has 149k miles on it and I have changed the oil twice now and just recently about two days before I put the downpipe on smoke started to come out of my tailpipes. It wasn't to much for the first few days so I wasn't all that concerned, but now it is really starting to come out. it does it when I shift sometimes and when I come to a complete stop after going about 45 mph a big cloud will come out the back. I thought the oil trap was clogged so I bought a new one and a buddy of mine and myself put that on but the old oil trap wasn't clogged. Everything seems to be fine and the car runs great but I am a little lost and don't know what to do. Does anyone have a clue what it could possibly be?