ok once in a while when i shift into second and give rev it to get more acceleration a big pop comes... it jerks my car back for a second and then just goes on with driving.. one of my theorys is when i bought the car it had the intake but stock exhaust... i was thinking to much air flow in but not out? anyone goes any feedback?

 

clutch, specifically the pressure plate

 

does that mean my clutch is gonna go soon?