popping from the exhaust is from backfires. Or if the exhaust doesnt muffle much you hear the crackle sounds as the rpms decrease.
back pressure is a myth, by the way.
So the popping sound is just a result of unmuffled exhaust?
2001 4dr Black GTP Stock and staying that was... maybe
1997 2dr Black GTP Open Cone, GXP Rims, Black Headlights, ZZP Headers, ZZP Cat Back, Bunch of suspension parts from ZZP, ZZP 10.5MM plug wires, Autolite 605s, Overkill Tune