Magnaflow Competition cat.back he drives me crazy

I have the magna comp cat back and honestly the drone doesn't bother me, honestly I think its too quiet in general but that just me. Plus also the fact I love in LA so everybody is going 80mph or dead stop in traffic... Besides I eventually want to go catless longtubes and see how much louder itd be! lol

pacomicro said:

I installed the cat-back competition this morning and the drone is absolutely unbearable.
Between 1600 and 2100 rpm is an absolute madness.
I do not understand how a company like [MENTION=13048]MagnaFlow[/MENTION] Puts on sale such a product, without at least giving a warning to customers.
To see if they can offer me some solution, if not 1200€ to the trash

Click to expand...

It's not their fault you bought a competition exhaust. Throw on a set of resonators and suck it up.

Laztug said:

It's not their fault you bought a competition exhaust. Throw on a set of resonators and suck it up.

Click to expand...

Actually, I bought a racing escape, not a squad of drones.

It has to be possible to drive the car normally and not produce that sound that makes you crazy.

One thing is that the sound volume produced by the exhaust is very high, which I do not complain about, and another is those frequencies that make you want to get out of the car.

Mustang_Lou said:

Well I've got the Competition axle-back and if you weld in the stock resonator that's what you'll essentially have.

I've got absolutely no drone at all so something's not making sense with Sprint66's comments (who also has a PP with 3.73's) except perhaps a leak somewhere or the tips were too recessed and it was droning off the bumper??

By the way, check that the tips are past the edge of the bumper.

If I were you, I'd see if you can exchange for the Comp axle-back but I doubt they'll take it back if it's already been installed.

Click to expand...

Same here. 3.73's. Manual. MF Comp Axle-Back. Only drone I get is when in 6th gear doing 80-90km/h, lugging it around 1700rpm under load...

It's too quiet, need an X-Pipe.

Not sure why the OP finds it a drone machine with the Catback. Maybe I'm missing something, or I drive it too high of RPM's to notice....

Do I have any other option besides putting the stock resonator back?

I mean put a glasspack or something else.

Keep in mind that I am in Europe and we do not have as many options as in USA

Will the sound go down when the stock resonator is reinstalled?

CGADAMS said:

I have the magna comp cat back and honestly the drone doesn't bother me, honestly I think its too quiet in general but that just me. Plus also the fact I love in LA so everybody is going 80mph or dead stop in traffic... Besides I eventually want to go catless longtubes and see how much louder itd be! lol

Click to expand...

The answer is MUCH louder. Sounds great but drone is crazy

pacomicro said:

Do I have any other option besides putting the stock resonator back?

I mean put a glasspack or something else.

Keep in mind that I am in Europe and we do not have as many options as in USA

Will the sound go down when the stock resonator is reinstalled?

Click to expand...

You could install some glass packs but realistically they won't get you back to the equivalent of the comp axle back which also has some drone about it, particularly for an auto.
You want either the stock resonator or some kind of large body muffler.
I have a Magnaflow cat back sitting in my garage if you want centre to centre measurements and the like. :cheers:

Honestly switch to the Corsa extremes or the Borla Atak. Both of those systems are just as loud with zero drone.

I wonder what the difference between the GT catback and GT350 catback is (aside from the active portion). I'd imagine with the valves open since most of the exhaust is flowing through the louder portion it should sound similar. I get no drone with with valves open or closed. I'm running a GT350 catback on my GT.

Should have gone Solo for that cost.

When I got my Magnaflow Street catback I was looking for something quiet. It was advertised as one of the quietest exhausts for the S550. And it was, outside the car. Inside the car it is loud as hell. I guess I should have done my research little better. I don't know who would like drone in their car. From what I hear you can tame the drone with something called a glass pack? I don't know, I didn't want to try it. I sold my almost new Magnaflow at half price here after only using it a few months . and got me the AWE SwitchPath, not looking back.

I bought my MF comp for $500 bucks used and have the 3.73's and I don't experience drone. For someone to lose 700 bucks on it means they obviously didn't like it either but then again, he sold his stang for a Miata.

Rather than clamps I had mine welded up so no idea if that makes a difference or if as others have stated if it's just the difference between how people drive.


I've got a motorcycle with a micron big bore exhaust that drones insanely on long distances, I just wonder sometimes if people know what drone means.

My only complaint is how loud it is in first gear, you sound like you're racing all the way through first even if you're not punching it very hard.

The drone is strong with this one, for sure. I got mine to a manageable level by dynamatting the trunk floor, spare tire well, and fender wells. Then covered that with a Home Depot 1/2" denim insulation with the silver backing. It took the edge off of drone. It is definitely still there, but not earsplitting. I also don't lug engine in 6th. (5sp w/ 3.55s)

This has made the Magnaflow livable for me. I love the sound and have gotten countless compliments.

Burkey said:

The answer is MUCH louder. Sounds great but drone is crazy

Click to expand...

lol I figure it will be but I usually blast my tunes in the process. that and if im moving on the highway im usually going 80 so im past the apparent drone area lol

pacomicro said:

Do I have any other option besides putting the stock resonator back?

I mean put a glasspack or something else.

Keep in mind that I am in Europe and we do not have as many options as in USA

Will the sound go down when the stock resonator is reinstalled?

Click to expand...

You may want to check out the MF tru-x resonated x-pipe from CJ Pony.