I am going to have a magnaflo muffler and tip put on my 05 V6,they said it should sound like a flowmaster 50 series,I had to go with the magnaflo because the flowmaster 50 would not fit. They also had issues with me considering duals because of backpressure and warranty issues, any thoughts anyone?

 

I have straight dual magnaflows on my 2000 V6. No problems there. Good sound, and modest performance increase.

 

I have dual-dual magnaflows on my 3.8 L V6 Grand Prix, no problems here.