Thread: Best flow + quiet aftermarket muffler?

Originally Posted by szalajka05

I want to get my restrictive stock mufflers off my car but dont want to be annoyed my loud less restrictive mufflers so I'm asking the GP world. Whats the quietest high flow muffler I can get? 07 grand prix gt s/c daily driven. I like a little rumble but don't want my ears to bleed. is there a muffler wheres its somewhat quiet under normal driving but loud under heavy driving?

Your stock mufflers aren't restrictive at all. So if restriction is your problem, I wouldn't change a thing.

If you want a better sound, I suggest a set of borla mufflers. They are expensive, bit will give you alittle more tone. Anything else is going to be very loud.

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The manifolds are more restrictive than the mufflers, start there if thats what youre worried about.

stock catback can handle 350+ WHP.

Go on youtube, I doubt it really does it justice but the magnaflows sound good on there. My friends monte also has them and it sounds pretty good.

Originally Posted by szalajka05

I've been hearing borla is good but I dont want drone or anything thats going to get annoying. Just a little louder

If you don't want drone, stay with stock mufflers.

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good luck making a 3800 sound good, just cam that b***h

remove res, put in glasspack. leave mufflers stock. get headers. thats the best sounding you will get out of these cars, sad to say.

Oh yay another exhaust thread where everyone tells the OP to just leave the stock cat back alone but won't listen............
Not like there aren't already a million of them.