Hi everyone, I recently became a proud owner of a 2005 Grand Prix Base Model with 92k original miles. Love the car, handles like a much smaller car and its got plenty of power and space. Got the car pretty cheap, body engine and tranny are in top shape but the car has many minor issues that I'm fixing slowly over time.
One of these issues may be the exhaust.
I heard they specifically tuned the exhaust system to be loud and sporty on the Grand Prix (even the base model) and the 3800s aren't exactly quiet engines either. At idle the exhaust sounds really good and sporty. However when driving and lightly pressing on the gas pedal at certain speeds and RPMS, particularly on Cruise Control the muffler produces a really low but quite loud rumble, around say 50-55 mph with the RPM being 1600 ish. When accelerating hard the muffler is actually quiet, but when city driving the exhaust is pretty loud, to the point of being somewhat irritating in normal city driving. Maybe I'm just not used to it, I'm 27 and I've only driven 4 cylinder DOHC with 16 valve econobox vehicles and this is my very first V6, and this is an old school pushrod V6 so...
