2 Chamber Flowmaster Original 40 vs. Super 44 Muffler Sound Comparison

This is a back-to-back comparison between a Flowmaster 40 series and Super 44 series two-chamber mufflers. Flowmaster 2 chamber mufflers are a staple of the Mustang Foxbody scene, and Flowmaster now includes Super 44 mufflers in their American Thunder cat-back kits. How does the Super 44 series muffler sound compare to the original 40 series muffler?

[@egresk1]

I am not a Mustang guy but there is just something about an older 5.0 with a set of Flowmaster Original 40s. One of the best sounding setups out there.

[@Mustang-Geek]

I totally understand what you're saying. There's just *something* about a Fox Mustang and Flowmasters.

[@rickmccoy9667]

probably the best comparison video ive seen... excellent job

[@Mustang-Geek]

Thanks!

[@ZXDF51]

Original 40's just sound better overall. I had 44's then switched back to original 40's. Hard to explain but 44's have a almost generic sound while the originals are more throaty and crisp.

[@Mustang-Geek]

Solid observation. It's certainly subtle, but if you know, you know.

[@Bob-Pye]

Contemplating my super 44 or 40s your comment just made It harder lol

[@ZXDF51]

@@Bob-Pye Yeah, some people say the super 44 is louder and sounds better but that is definitely not the case. If you want the traditional 5.0 sound go with the original 40. 🐺👍

[@Bob-Pye]

@@ZXDF51 hey thanks got a set of og 40s...

[@Knockn_shitdown]

Every type of engine sounds different with with the og 40 or the super 44 i got a 68 buick with a 455 Big Block in it no cat i had original 40 series on it at first then i put the super 44 on it and it was a little more stronger tone with the throttle down

[@Electrocycle300]

Best comparison video ever. Perfect side by side! Great for us who are trying to make that choice !!

[@Mustang-Geek]

Glad it helped! Please like and subscribe!

[@VacFink]

Nice comparison. Hard to discern a real difference with my computer speakers except maybe a bit more bass resonance in the OG 40. All-in-all with both you get that classic fox-body sound. The Pavlovian bell of all street scene knuckle draggers of the mid and late 90's. Those were the days.

[@Mustang-Geek]

Agreed. To me, the original 40 sounds "smaller" ...if that makes sense.

[@ellisjackson3355]

As a kid before I even knew much about cars, I would hear this sound and know it was coming from a mustang

[@bailey9r]

Fords always had a distinct sound a burble kinda like the pipes were under water or something. I like it so don't think the description was knocking anything. @@ellisjackson3355

[@atarheelchamp199]

Which one sounds throatier and deeper

[@Stainlessslayer]

This is the most thorough comparison video on KZbin. Well done.👌 I have 44s on my fox and love em. Those 40s sounded good too.

[@Mustang-Geek]

Thanks! Please like and subscribe!

[@BobSmith-mc7uq]

Negligible difference, both sound good!

[@Mustang-Geek]

Subtle, for sure! I wanted to do a good A:B comparision

[@Bob-Pye]

Thanks for this vid great job super 40s sounded amazing with h pipe classic 5.0 comin down the rd . I can remember when I was a kid I didn’t even have to look. I heard that sound coming down you knew it was a 5litre.

[@Mustang-Geek]

You got it!

[@adamc3077]

Still do. I'm a Chevy fan but I'm a sucker for a 5.0

[@szymon6207]

DO YOU ENGINE SOUND REALLY COMPARISON ?

[@mtnbos]

They sound identical. I have the 44s now and love em.

[@Mustang-Geek]

They are slightly different. The 44 is a bit more "hollow" and "deep." But very very similar.

[@yrigoyen0108]

Man that is an excellent video, thank you!!!

[@Mustang-Geek]

Thanks! Please do me a favor and like, subscribe, and SHARE this video!

[@dntlss]

Exhaust is a very personal thing, you almost have to try it yourself,i have seen exhaust reviews were someone says " these things are loud" and the guy below says, man these mufflers are real quiet"😂. Your video is excellent man, to the point, no gimmicks.

[@Mustang-Geek]

Thanks! Please check out my other videos!

[@johnlocklear]

I put Super 44's on my 89 Saleen just recently. I still have the original 40's that came with it. They have dumps welded to them. I may put them on my 92 coupe when it gets back from being reconditioned. It has straight magnaflows on it now.

[@Mustang-Geek]

Seems like you can't go wrong either way!

[@dineenhorse6665]

Honestly both sound good!

[@cochisesmith8541]

Great vid helped a lot

[@Mustang-Geek]

You're welcome! Please like, subscribe, and check out my other videos!

[@ripjanetstrimel3312]

They both sound good

[@pacific7775]

Had the 40s.. The American thunder catback exhaust on two fox bodies and they sounded absolutely amazing..idle ,cruise ,wot all them were great ..

[@Mustang-Geek]

Can't go wrong with Flowmasters on Mustangs!

[@haygood9]

Love the 40 series sound

[@Mustang-Geek]

Agreed! It's hard to beat a fox Mustang with Flowmaster two-chambers!

[@johnbehneman1546]

THANK YOU SO MUCH!!! I LOVE IT!!!! THE ORIGINAL!!!!

[@Mustang-Geek]

Please spread the word.

[@Shamarihindsbmx]

Super 44 all day

[@Mustang-Geek]

"Change mind!"

[@darrell67ohio]

FixBody, Thanks for your time and work making this Great video. I'm going to change my exhaust around on my Camaro and I've been reading watching a ton on KZbin.. Cars and Bikes take on owners personality, that's what makes them GREAT. In my option a V8 sounds better than any 6or4 cyl. regardless the price tag. Your not going to put a muffler on a stock truck and it become a Monster Truck.. or a muffler on a stock car and it sound like a Pro Street monster. But mufflers are cheap and easy and that's what people do hoping for the same results. With all of that being said...I think the 40/44 sounds close on THIS mostly stock car on the outside of the car. I'm curious to your option and others... about theses 2 mufflers INISIDE the car. ???? In the flowmaster lineup I like the 40/44/10 for the Muscle Car sound. Not driving everyday but on weekend/shows etc. I'm "old school" so I think a Muscle Car. Should sound thump look like a Muscle Car.

[@Mustang-Geek]

Inside the car, they sound very similar. I prefer 40-series to the 10 series because the 40-series is the classic flowmaster sound. Please like and subscribe!

[@krownvikkhris3004]

They both sound awesome, but I think the Super 44s sound a little more aggressive

[@WesDuenkel]

The 44 is a bit "deeper."

[@krownvikkhris3004]

@@WesDuenkel yes sirr

[@RW-zh7kl]

That's crazy didn't think anyone would have a comparison like this. They sounded almost identical?? I have the older 40 2 chambers and I'm trying to figure what way to go for something just a little quieter.. by I'm sorta looking at just adding resonators.

[@Mustang-Geek]

I agree that they sounded more similar than I expected!

[@ahmindamon]

Best video ever 👌🏾

[@Mustang-Geek]

Best comment ever

[@strokedmustang66]

Nice video, I bet if you make this video into a short and upload it around 11:45 am PST you will get alot of views. Also ad foxbody mustang exhaust in the name. it will help. The reason why I say 11:45 am PST is bc everyone on the west coast will be just starting thre lunch, Central time will be ending their lunch soon, and east coast will be getting home soon.

[@scubasteve06]

Did you notice any difference in the interior noise, more specifically if either muffler has any drone or boomy resonance that happens at certain RPM’s?

[@Mustang-Geek]

About the same. No difference in drone, etc.

[@andres99house]

Great job!! Love the super 44s

[@Mustang-Geek]

Thanks! It was surprising to me how closely they sounded.

[@MichaelEarl]

Man, not much difference but maybe 40’s are a bit deeper but still just as loud? Very close. Had 40’s on my 02 Mustang and they were perfect

[@Mustang-Geek]

Yeah, they sound closer than I expected.

[@noswad8968]

Do you have different mid pipes or headers? Or are they factory? And also, it sounds like you have a slight cam in there?

[@Mustang-Geek]

Factory headers and off-road pipe. Stock cam.

[@noswad8968]

@FixBodyMustangs thank you for the reply! I recently invested in a set of Super 44s for my 88' GT and I'm just trying to get an idea of what I want for my mid pipe.

[@Mustang-Geek]

@@noswad8968 Any off-road H or X pipe will sound great.

[@superrf85]

They both sound awesome! Of course just about any muffler sounds great on a mustang. Wish I could get my crown Vic to sound that good.

[@Mustang-Geek]

I think on a crown vic they would sound very similar.

[@MadeScholar503]

Got the 44s on my Titan and other people are always asking what I have on there. Thinking of switching to the Super 40

[@Mustang-Geek]

I think the Super 40 sounds quite a bit milder than the 44.

[@MadeScholar503]

@@Mustang-Geek I agree. I think my wife would like that too lol

[@southerncross3638]

I have a 40 on my Excursion V 10, single exhaust no cat, everyone says it sounds good 👍

[@Mustang-Geek]

Sounds like a great combination!

[@robertpolanco3467]

I got a cammed 1987 4runner choppy aggressive sound. what i install a cherry bomb glass pack or thrush glass pack or go with 40 series???

[@Mustang-Geek]

40 Series all day!

[@robertpolanco3467]

@@Mustang-Geek may I ask why 40 series and not cherry bombs

[@Mustang-Geek]

@@robertpolanco3467 I personally don't like the sound of glass packs.

[@markwaltman1524]

This is exactly how it’s supposed to be done!! I hope people learn from this! And zero talkin! I’m not tryin to hear somebody talk, I want tone, please cam it and let us hear again

[@Mustang-Geek]

Thanks! Please like and subscribe!

[@MrMany2811]

I did 2 Flowmasters super 44 on my 85 vette , i have a small cam with long tube headers , i also made all new 2.5" exhaust with xpipe and i have to say i am not really happy with the sound ,sounds good at idle however i am getting a pretty decent amount of drone on low rpms and lots of vibration on the back hatch ,definitely sounds good on wot but it is a bit to loud for me idk maybe i am just getting to old😂

[@Mustang-Geek]

Do you have a catalytic converters?

[@MrMany2811]

@@Mustang-Geek no cat just the xpipe where the cat used to be ,my car only had one catalytic converter right on the middle

[@Mustang-Geek]

@@MrMany2811 catalytic converters certainly make a huge difference in sound. You may want to try installing these somewhere in the system: www.holley.com/products/exhaust/builder_components/resonator/parts/15150S

[@MrMany2811]

I will look in to that ,crazy because i had muffler delete on no cat on my old exhaust system and i didn't get much of drone ,i do love the rumble on the flowmasters 44 but is like the sound is out of tune lol

[@maskedmumbler4127]

To be honest, you should try the outlaw series with the dumps. I installed them on mine and it’s insane!

[@dubljay0612]

Uh.....no.....not even close.....the Flowmaster 40's should have came stock on the Fxobodies.....the outlaws sound like shit compared to the flowmasters

[@maskedmumbler4127]

@@dubljay0612They are both Flowmaster mufflers buddy, and I still have them on my turbo fox and it sounds amazing.

[@omotesando5456]

Awesome video.

[@Mustang-Geek]

Thanks! Please like and subscribe!

[@jasonkaiser1292]

Is it ok if a 40 series original is installed upside down??

[@Mustang-Geek]

There are no orientation limits. Only "inlet" and "outlet."

[@jasonkaiser1292]

@@Mustang-Geek thank you so much for your input👍🏻👍🏻much appreciated

[@Mustang-Geek]

@@jasonkaiser1292 No problem! Please share, like, and subscribe!

[@AdmiralRustyShackleford]

You said no difference in interior sound or drone what about power? Flowmaster say the Delta Flow mufflers make more power so the 44 should make a little more than the original 40.

[@Mustang-Geek]

This car probably has 200 HP on a good day. I couldn't tell a difference on power. It's very slow regardless of the mufflers :) Please like and subscribe!

[@reinaldotrujillo7922]

44 sounds more aggressive.

[@Mustang-Geek]

It's subtle, for sure. Please like and subscribe!

[@BPattB]

Running 40s on my 65. Wouldn't change a thing,,,,,, for now lol

[@Mustang-Geek]

Sounds like a great project! Please like this video and subscribe :)

[@BPattB]

@@Mustang-Geek Liked it for sure. There's a few videos on my channel of the 65 coming in hot, Cars that old are never done but I'm really happy where it's at. Looks good and is relatively fast. They are always a project when you don't have $45K to spend at once lol.

[@Mustang-Geek]

@@BPattB That's the truth!

[@williamklingman809]

They sound the same but I feel the 40 In the last clip was better

[@squirrelsultan72]

Good observation. Please like and subscribe!

[@Gkitchens1]

I think original 40s were literally made by the car god to bolt behind a 302 in a fox body. They never would have been popular otherwise lol

[@Mustang-Geek]

Fact. :)

[@kenshin034]

44 better all around for higher rpms and quiter inside still loud deep even better if no resonator leave the cats on

[@Mustang-Geek]

Good points! Like and subscribe :)

[@tracyparkerfilmsandphoto2933]

You can't really hear much difference in these mufflers until you get into a built motor. If your motor is pretty mild or stock, then save the money and just go with the 40's, but if you have a big cam and stuff, then you will notice it much more and have more bark with the 44's.

[@juansaladzar]

Interesting 🤔 I love the 40’s on a 302 Windsor. I knew some cats that had built strokers & stuff but they ran either 3” Mac 1 chambers or the 3” Super 10’s brah

[@BPattB]

Well my 65 is built and the 40's sound really good. What's kind of cool is with 3 different carbs the idle sounds different for each carb. I have a video on my channel of the 3 carbs idling for sound comparison.

[@tracyparkerfilmsandphoto2933]

@@BPattB Carbs make a huge difference. I had one of the Fitech throttle bodies on mine at first and it sounded so lame and then put carb back on it, and it sounded so much better and meaner.

[@BPattB]

@@tracyparkerfilmsandphoto2933 right!

[@indraavatar1942]

Which is deeper sound?

[@Mustang-Geek]

I'd say the Super 44...by a very small margin.

[@rdy2run332]

They sound the same to me

[@Mustang-Geek]

They sound very similar. Only true exhaust nerds can tell the difference :)

[@rdy2run332]

@@Mustang-Geek car needed to be reved higher around 6500 rpm ....either way I would go with the super 44 because they are supposed to flow better.

[@kyro6765]

Is super 44 series street legal?

[@Mustang-Geek]

Sure.

[@TheRaptorWranglerCreates]

Its such a small difference but I like the 40 because it sounds a bit deeper, but it could just be me.

[@Mustang-Geek]

It is VERY subtle, for sure! Glad it helped you!

[@TheRaptorWranglerCreates]

Thank you for making this video ​it was extremely well done @Mustang-Geek

[@TheRaptorWranglerCreates]

​@Mustang-Geek I'm actually gonna buy a 40 series soon, this video certainly influenced that

[@Mustang-Geek]

@@TheRaptorWranglerCreates Great!

[@JasLWea]

Super 40 has throaty rumble I can hear

[@Mustang-Geek]

Agreed! Please like and subscribe!

[@fish_R_stinky69]

Both are quiet.

[@Mustang-Geek]

What? I can't hear you because they're so loud! LOL. Please like and subscribe!

[@franciscoaponte5933]

Sounds equal

[@Mustang-Geek]

To the untrained ear ;) Please like and subscribe!

[@ELVIEJONSHINOLAZ]

they sound the same to me.

[@Mustang-Geek]

They are very similar.

[@shanesmith5603]

They sound the same pretty much. I can't tell the difference

[@Mustang-Geek]

Blasphemy! :)

[@windsorsanchez7144]

Can't really hear the difference in my cell phone!!!!!

[@Mustang-Geek]

Try at home!

[@superdad7603]

That sounds bout the same

[@tigahstylez2316]

Super 40’s sound like a 🦁 and the Super 44’s sound like a 🐻 I like the super 40’s better lol 🦁

[@jrjones437]

No difference

[@Mustang-Geek]

Well, now you know!

[@TheSlim93gt]

They both sound terrible to me, but to each their own. Definitely a 90's sound.

[@odinsons2818]

Is this with a cam or stock plz say stock

[@Mustang-Geek]

It's stock. Just off-road H-pipe.