I was having fun leaving a stop sign when I heard a loud BANG! I saw a big puff of black smoke in the rear view. The engine had just revved up and the tranny down shifted. Afterwards, the engine seemed to run fine. I didn't hear any loping or sputtering. THere are no codes. Any ideas? Am I gonna have to rebuild my engine AGAIN?

---AutoMerged DoublePost---

Actually found the answer to my own question. The clamps on the charged air pipes had come loose. When it let go under acceleration, there was a loud POP. with the boost pressure gone, the fuel air mixture was rich for one cycle until the computer compensated, hence the black puff of smoke.

 

yep, popping a boot off makes some fun noises