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Anyone running magnaflow Mufflers
#31
(02-17-2019, 05:48 AM)bac Wrote:
(01-25-2019, 08:33 AM)Stanglover Wrote: For me , still no idea what I'll go with. I want that FM40 sound, but zero drone and there's the hard part. A Mach 1 ought to sound beefy. A vert, not so much especially with the top down, It does however need to sound like it has an engine under the hood, not a sewing machine.

Sorry to be coming in on this discussion late in the day, but if you're still looking I can confirm Magnaflows will still give you 90% of the FM sound at idle with zero drone at higher RPM.  I have done the FM ->Magnaflow conversion on three different Mustangs now with no regrets.

Another option that sound quite similar to Magnaflows without the price tag are Jones Full Boar Performance mufflers. Slightly less rumble than Magnaflows at idle but just as good when you step on it and around half the price!

 Brian, thanks for your reply and not too late. Good info for all.
Yes, I'm still looking for a good replacement set of mufflers. So many choices and opinions. Just hard to make up my mind.
Trouble is, my exhaust is still not "falling apart", so it may have to go one more year. Cash flow is limited and a new set of BFG's are on order for when it warms up and the car is back on the road.

mbrew2;
Bottom line is there are several options for mufflers available. I suggest to make a list and note the comment, then decide.
Geoff.

I learn something new every day!
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#32
Although it is a different animal I had magnaflows on my 2003 cobra and they were more quite then OEM on the highway, but had nice deep tone at idle and with hard acceleration.
I had flowmaster 40s on my 73 (429) and also experienced minimal drone at about 2500 -3000 rpm but did not notice it much because I have 4:11s so am above 3k at cruse most of the time. I now have super 10s and although louder then the 40s I have no drone. 40s sounded better at idle when I first moved to 10s but changed from x pipe to h pipe and improved sound at lower rpms. ( I know I probably lost 1-2hp at redline) for me flowmasters have a more authentic muscle car tone then magnaflows. Have you thought about super 44s they are supposed to have less drone also. Drone is due to resonance. This style of muffler uses resonance to enhance exhaust note tones. Some resonance and drone is inevitable. You may get less drone with 10s ( or cherry bombs- the most likely choice in these cars haydays)- but you will get more noise and still not be able to hear radio or have a conversation. Go to muffler shop that sells each listen to each in different cars. Watch out for counterfeit flowmasters not uncommon. Every setup is different and where that drone occurs will depend on more then just the muffler. It sounds like you lean towards quieter, but just in case 10s in most v8 mustangs probably illegal in most cities.
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#33
(02-18-2019, 11:17 PM)Doc302 Wrote: Every setup is different and where that drone occurs will depend on more then just the muffler.

This is no doubt true but I've owned 3 different model year/engine/exhaust configuration Mustangs with FlowMaster 40s and they all had a signature bad drone between 2000-2500 rpm.


Cheers,
Brian
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#34
(02-18-2019, 11:45 PM)bac Wrote:
(02-18-2019, 11:17 PM)Doc302 Wrote: Every setup is different and where that drone occurs will depend on more then just the muffler.

This is no doubt true but I've owned 3 different model year/engine/exhaust configuration Mustangs with FlowMaster 40s and they all had a signature bad drone between 2000-2500 rpm.

 Soooooooooo! it's not just me who's car has that horrible drone between 2000 and 2500 rpm with Flowmaster 40's!
 
Reading through the many posts and opinions, I'm very tempted to try a pair of Summit Racing mufflers. Without going back to check exactly which ones, the comment was they sounded good and no drone and CHEAP! They are only about 35 bucks each if I remember. So with the current crappy exchange rate, I still would not be out of pocket too much if I don't like them. I'll go check and edit this.
Geoff.

I learn something new every day!
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#35
Hello
I have magnaflows with 3” h pipes and 2 1/2 pipes after the mufflers and never a drone.
Loud at acceleration and full throttle but not too bad at cruising speed 55-75

[Image: mustangnight010.jpg]
1972 Mustang Convertible 351C 4V
1966 Ford Galaxie 7 litre-4speed

Jorge
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