Menace

Well, this post is just plain retarded. Mustangs are supposed to sound like a truck. Why? Because these cars have always used the larger motors used on trucks. The mustang shares the motor with the Ford Explorer. The GT 500 shares the motor with the F series 5.4s and the Ford GT. If it weren't for trucks needing the larger displacement/horsepower. We'd all be driving 4 cylinders.

With that being said many people have SLP Loudmouths, which do little to dampen the exhaust tones as far as being a muffler. So removing your stock mufflers will more or less achieve the same sound. SLP Loudmouths are one of the most popular systems for these cars.

Puddle356

no hp gain, at least that I know of, I don't think it would be much of anything if there was. It really didn't sound as bad as you would think, only at certain rpms.And no, your chances of gas poisoning aren't increased at all with just taking the mufflers off. the head unit is just one I got on sale pretty cheap that I liked, its made by Jenson, works great.

also, there is noticable difference between slp and just no muffler, way more than i thought there was going to be anyway. SLP makes it slightly quieter and a more refined sound, also adds a tiny bit of drone that wasn't there before at really low rpms.

Stoenr

I was exaggerating about the carbon monoxide poisoning. But I bet you will smell it more, and a trip with the windows up sure could get some in there. The trunk area isn't perfectly sealed.

1sloGT

i just removed the muffs and it sounds mean...but as all u said , it is very loud. I think it sounds pretty good, got a lot of thumbs up,

Anyone know the fine is if u get pulled over?

JibStyle

what about the over-axle pipes right before the mufflers, if you remove the mufflers then doesnt that mean the overaxle pipes are hanging loose? is that bad?

lrgnation

just take the pipes off from the cats or take the cats off too and run straight header.

owero01

Depends on the noise ordance where you are. Some places do require mufflers and as for removing the cats, that may even get your car impounded in some places.

saud alzaabi

I am thinking of funning JUST the cats off... what do u think ?
advantages and disadvantages ? and with stock exhaust setup and no catalysts would it be REALLY THAT LOUD ?

for example how many times the stock sound will double ?

Black07gt

that is what i have been thinking of, since i took the mufflers off and finished the pipes icould take the cats off go with the muffler guy and tell him to just continue theexhaust eliminating the cats. but if i do that then my check engine i gonna go on and i don't have a tuner