[dafm44]

I have a 2002 Mustang. New to me, I am not sure if the sound is normal. When accelerating at 45-50mph with the rpms at 2, I hear a rumble or a roar before it changes gears. Any feedback? Thanx

[braupe]

I believe that is just the back pressure neutralizing in the exhaust system, mine does the same and so does my friends 01 GT. I kinda like the sound with flowmasters. Congrats on your 02, I think you will love it.

[CrimsonFever]

Yep mine does the same too, and you're right with flowmasters it sounds awesome, the flows are the loudest right at 2000rpms above and below its quieter lol

[dawrr]

Originally Posted by dafm44

I have a 2002 Mustang. New to me, I am not sure if the sound is normal. When accelerating at 45-50mph with the rpms at 2, I hear a rumble or a roar before it changes gears. Any feedback? Thanx

It may resonate at a given pressure. Different gears and different accelerations may account for the resonance only occuring at a certain rpm rate in a certain gear. Resonance is when waves reinforce themselves through interference.


Is there any mechanical "feel" to it?

[thomasusmc]

Are the exhaust tips exiting the vehicle?

I had turn downs, pre-axle, and they were LOUD AS HELL especially @ 2000RPM range.

It was kewl for the first couple of weeks, but anooyed the hell out of me shortly. I had to stay below 45 or over 55.

If you have pre axle turn downs, it has a lot to do with the rumble you hear. The sound is normal, but AMPLIFIED with the turn downs.

BTW, i got the pipes extended out the back, still sounds good and doesn't annoy the hell out of me or my passengers.

[gr8pilot]

To heck with flowmaster. But some raptors, they'll rattle your nuts!