Help me figure this out...

[9646GT]

first rev your engine and see exactly where and when it laggs. if it doesnt you might have a tranmission problem. dont get to any conclusions yet untill you

Ok.. I just had a reving session... at first it will rev fine but when I have it reved up and as its coming back down and I kinda punch it it boggs out at about 4000rpm... one side of my exhaust is crackling loud on its way back to idle.. kinda like a backfire. I had a really strong smell of phosphorus after a minute. I could actually rev the engine all the way to 6000rpms if I accelerated slowly. But like I said if I push to the floor quickly.. it boggs out completely.I was trying to simulate driving... punching it while its at 2000rpm. Now Im not really sure what this could be.