fosman77

got numbers off mufflers, auto is F1-7991-l 122964, manual F1-7849-l 10527A

fosman77

Just called Brenspeed, and was told that it would just have a different sound, Nothing to change the tune for. Fosman

8178A

That is really interesting. I’ve noticed that automatic cars sound different/quieter than the manuals. Do you suppose they were concerned that the automatic drivers would complain about the loader sound of the standard mufflers?

ThumperMX113

I don't understand why the mufflers are different ...[&:]

157dB

i dont understand why my $17,000 mustang leaks when it rains, either... [&:]
Figure out Fords thinking and let us in on it.

MikeD916

+1

topbliss

this is what I think.. I used to work in automotive marketing so I know how they think..

smokestang

I think autos are louder than manuals, due to the fact that they upshift as fast as possible all the time rather than hold in any one gear! mine is an auto ,and mine was considerably louder thanmy buddys manual with the same exhaust setup! I guess ford figured it may be too loud and made a different muffler...thats all i can think

PROMETHEUS PRIME

It might have something to due with the rpm's. Auto's and manuals will be at a different rpm range at the same speed so my theory is they did this to cut down on any dronning.

StickShifty

wow, i had no idea!! thats wierd.