Popping sounds when accelerating hard

[auxi]

I have a 04 v6 auto, When I accelerate really hard at speed I get a popping noise and it doesn't seem to have any power so I generally back off, it wasn't happening with the stock exhaust I had on for a week while I got an epa cleared, but if I accelerate from a stop it doesn't happen, if I try to do a burnout it pretty much just pops and the wheels wont spin or if I try to accelerate by dropping down a gear I often get the popping sound, has no trouble at all drifting in the wet or the dry, no trouble climbing through to 6k from a stop, my transmission is pretty terrible I know that as I it jerks going into 2nd and 3rd, unless the revs are below 1500 or above 4k, so that was first thought but it doesn't explain the popping if I try to do a burnout, spark plugs only have 40k on them engine has 144k, my only guess is that (and I am in no way in the slightest at all a mechanic) one or more of the piston rings is worn out and lets pressure out when under heavy load? also just had a service no issues apart from battery not charging properly from the sound system murdering it.

Anyone got any ideas or heard it happen previously?

 

[Ozzy]

With all the Burn outs and drifting you seem to be doing it's no surprise to me that something's gone wrong. Owning a vz acclaim myself I feel a little sad for it

 

[Silverbird]

No codes? Battery not charging? Leave your stereo off for a week, drive gently for a week. Revisit the thread and update us.