1bigcam

iTrader: (9)

i have a 05 gto with 416 and l92 heads, the exhaust is long tube headers no cats 3 inch xpipe 3 inch duel in to dynomax bullets, i need to quiet my car down some but dont want to hurt the hp. are magnaflow mufflers ok to use?? any body do a dyno back to back between mufflers??

LightFighter

iTrader: (1)

if you want to eliminate in the cabin Drone then factor in some Resonators that will take care of you

Gregory

iTrader: (4)

I currently have Corsa exhaust on my 402 GTO. The Corsa exhaust has a second small muffler about where the rear passengers sit. While still louder than the factory exhaust, I can't say there is a drone. The exhaust system is 2.5" ID stainless.

If I do it again it will be with spintech 3" stainless.

I had Borla exhaust on it, and it sounded great, but it was very loud. Too loud.

1bigcam

iTrader: (9)

iam not worried about the drone just dont want to hurt the power.

FastPacedGTO

this might help you.
stock 2.5" piping



flowmaster mufflers choking the car, then w/ magnaflows.

2.5" on our catbacks isn't even a restriction until 500whp, so w/ anything 3" you have TONS to spare.

1bigcam

iTrader: (9)

thanks that helps , were do you think dynomax bullets would fall it there at

lilbuddy1587

iTrader: (1)

Magnaflow 4x9 mufflers or Borla XR-1 oval series mufflers. Both mufflers are some of the best flowing on the market and will help to mellow out the tone but still keep that deep bass to it. Drop the hammer, and they're almost as loud as a bullet with a much better tone that is more refined.

FastPacedGTO

Where are your "bullets" now? I get away w/ a SINGLE dual in/out INTERNAL X-PIPE magnaflow muffler where the stock resonator was and thats it.

1bigcam

iTrader: (9)

in the rear were stock was

Powerstick

Powersticks. No drone, super deep, huge flow.

FastPacedGTO

Just consider adding another pair of bullets in the middle of the car.

That should help alot.