installed ats non waste gated kit, was fine for 30 miles of straight hyway. I down shifted getting off hyway , then it started smoking grey and would not stop till it sat over nite, then it went another 25 miles before I down shifted and it did it again , it continues to smoke badly untill it sits for a while, oil leaking from exhaust. the first time it burned a quart in 10 miles the second a quart in about the same. i say ten miles becqause thats when it stated smoking. any ideas? be sides turbo seal, why only when i down shift.