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Old 12-13-2011, 11:01 AM   #1
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Flowmaster question

Are the American Thunder's any different from 40 series? And has anyone heard the new 5.0 mustang with the 40 series installed? Also one more question. How different does the American Thunder axle backs sound without resonators? I'm looking at exhaust so I'm weighing my options. I want it to sound awesome but I'm not gonna shell out 8-900 on something like borla.
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Old 12-13-2011, 12:21 PM   #2
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Re: Flowmaster question

I have the American Thunder axelbacks....... I think they sound perfect, loud enough to be heard, but not loud enough to draw unwanted attention from the POPO. When I say loud enough to be heard, I mean... I set off a couple of car alarms in a covered parking garage this weekend loud.
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Old 12-13-2011, 12:36 PM   #3
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Quote:
Originally Posted by M3to5.0
I have the American Thunder axelbacks....... I think they sound perfect, loud enough to be heard, but not loud enough to draw unwanted attention from the POPO. When I say loud enough to be heard, I mean... I set off a couple of car alarms in a covered parking garage this weekend loud.
Do you still have the factory resonators?
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Old 12-13-2011, 12:55 PM   #4
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Re: Flowmaster question

Yes... everything is stock except the axelback
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Old 12-13-2011, 03:02 PM   #5
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Cool. I may go that route then. I keep hearing that the YouTube clips really dont do the American Thunders justice. Thanks again man.
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Old 12-13-2011, 03:34 PM   #6
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Re: Flowmaster question

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Cool. I may go that route then. I keep hearing that the YouTube clips really dont do the American Thunders justice. Thanks again man.
Youtube truly does the AT's no justice, the videos sound hollow and raspy.... it is a nice deep rumble that has a good roar under WOT! Get them... you will not be disappointed. I may at a later date replace the cats and mid pipe with something more free flowing, but I am happy for now.
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Old 12-13-2011, 04:11 PM   #7
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I'm defiantly gonna get them. Thanks a lot for all the info.
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Old 12-14-2011, 10:44 PM   #8
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I have the 40's, and they are slightly louder than the American Thunder axle-back muffler's; or so my exhaust guy said. I love them, as they have that classic 5.0 sound. The lows they produce is my favorite aspect, and they don't drone like a lot of the other brands. They sound best at start-up and full throttle; especially when going under a bridge or through a tunnel.
I have always had Magna Flow in the past, but I am so glad I chose the 40's. I am in no way bashing Magna Flow, i just think the Flowmaster's sound better on this car. In my case, I chose the 40's over the American Thunder axle-back kit because I didn't want to wait to have them shipped, and I also wanted a more custom look at the tips. I believe the 40's are aluminum, and axle-back kit is stainless; not a 100% sure on that. Also, the kit's mufflers are black, and the 40's will be silver. To me that shouldn't be a factor, because they are so much smaller than stock that you won't really see them. All-in-all I am beyond satisfied with the sound, but would have just got the kit you are looking at if I could do it over again. Nothing to do with quality or sound, but rather the installer nickel and diming me on the cost
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Old 12-14-2011, 10:53 PM   #9
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That's why I was going to get the kit. These muffler shops around here are wanting an arm and a leg. One shop told me $200 per muffler. Just to take off the stock muffler and replace it with a flowmaster. That's nuts. I'm a welder by trade and know there's not much to installing a muffler. I've done it before but dont have access to a lift right now or I'd weld the mufflers in myself. So I'll just order the bolt on kit and do it myself.
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Old 12-14-2011, 11:08 PM   #10
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Re: Flowmaster question

I had 40 Series on my 04 GT Vert, a little loud at times, but then again I had a Vert. I will be getting them again for my 5.0...
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Old 12-14-2011, 11:32 PM   #11
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Re: Flowmaster question

Quote:
Originally Posted by NuckChorris View Post
That's why I was going to get the kit. These muffler shops around here are wanting an arm and a leg. One shop told me $200 per muffler. Just to take off the stock muffler and replace it with a flowmaster. That's nuts. I'm a welder by trade and know there's not much to installing a muffler. I've done it before but dont have access to a lift right now or I'd weld the mufflers in myself. So I'll just order the bolt on kit and do it myself.

There is ABSOLUTELY no reason for you to go to an installer to have an axel back system put on. I bought myself a couple of plastic drive up ramps, backed the car on them during lunch... at my work and put them on in one hour. AAAAAND I am by no stretch of the imagination mechanically inclined.
You literally have to loosen 2 clamps, remove 2 bolts get the factorys off which can be a pain without some sort lube for the nipples on the hangers... I actually used LOTION... yes HAND LOTION because that was all I had available at work and it worked just fine. hang the new ones, re tighten everything and start her up. It was one of the easiest mods I have ever done. Save your 400 bucks and spend 39.99 on a ramp and do it yourself.
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Old 12-14-2011, 11:41 PM   #12
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Oh m3, you missed what we are discussing. The 40's are not a axle back kit, they require fab and welding. They are just the mufflers that one must weld the tips and fab and weld the up-pipes. He was simple commenting on how a lot of exhaust shops will charge like it is brain surgery to do some simple welding.

---------- Post added at 05:41 AM ---------- Previous post was at 05:39 AM ----------

M3,

By the way, I really lime what you did under the hood.
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Old 12-14-2011, 11:43 PM   #13
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Re: Flowmaster question

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Originally Posted by drivinglesson View Post
Oh m3, you missed what we are discussing. The 40's are not a axle back kit, they require fab and welding. They are just the mufflers that one must weld the tips and fab and weld the up-pipes. He was simple commenting on how a lot of exhaust shops will charge like it is brain surgery to do some simple welding.

---------- Post added at 05:41 AM ---------- Previous post was at 05:39 AM ----------

M3,

By the way, I really lime what you did under the hood.
Thanks,

Sorry... it is 0645 AM here and I am trying to get through my first cup of coffee. lol
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Old 12-14-2011, 11:45 PM   #14
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Lol, where you at? Desert?
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Old 12-14-2011, 11:56 PM   #15
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Re: Flowmaster question

Germany
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Old 12-14-2011, 11:57 PM   #16
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Oh nice, I miss Germany.
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Old 12-15-2011, 12:13 AM   #17
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Re: Flowmaster question

where were you at?
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Old 12-15-2011, 05:06 AM   #18
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Re: Flowmaster question

I am currently in Alabama.
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Old 12-15-2011, 05:13 AM   #19
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Re: Flowmaster question

Quote:
Originally Posted by drivinglesson View Post
I am currently in Alabama.

I meant when you were in Germany... where were stationed?
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Old 12-15-2011, 05:26 AM   #20
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Re: Flowmaster question

Oh, sorry. I was at Ramstein AFB in the late 90's.
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