W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Installed Fabtech-Performance high flow Axle back Mufflers W/dyno video & graphs

Old Nov 22, 2012 | 10:01 PM
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Installed Fabtech-Performance high flow Axle back Mufflers W/dyno video & graphs

Purchased the mufflers from Fabtech looking for a little more V8 sound from the E without going the whole x pipe resonator delete. I chose to have them installed at the local dyno shop. Although you could do it yourself I just wanted to have it done on a lift by professionals. FTP sends pics to detail the measurements where the cuts need to be made. The piping slips over your stock exhaust and clamps on. Simple straight forward design.

Definitely wakes the car up. My E55 is completely stock and I gained 25wtq and almost 40whp on the first (not heat soaked) pull. After that HP gain was around 25.
Sound is there. All the time. Not obnoxious for cruising or at any point actually but sounds good and mean opened up. Even get a burble slowing down for a stop light.

Pic and video:


















http://youtu.be/4lgbsQ2TPFM
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Old Nov 22, 2012 | 10:08 PM
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Great gains..

FYI. Prepare for the **** storm that is about to ensue

And there are the gains you were asking for Hulk..

Last edited by AKnight55; Nov 22, 2012 at 10:10 PM.
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Old Nov 22, 2012 | 10:13 PM
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That seems pretty loud for a stock setup, my car would likely sound like a top fuel with those mufflers...lol.
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Old Nov 22, 2012 | 10:29 PM
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Please let us know where we can buy these.
Does anyone have any contact info.
I need these like now!!!!!
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Old Nov 22, 2012 | 10:34 PM
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Still don't like how round those tips are compared to the stock ovals. They seem to leave a lot of empty space in the bumper cut-outs.
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Old Nov 22, 2012 | 10:44 PM
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holy crap, that's some good power from a muffler swap :o

I can't imagine what the sound would be like with the resonator removed

The only gripe I'd have is the spot welded FTP logo on the muffler - those would eventually get rusty... much rather see a laser etched logo or even heat resistant silkskreen
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Old Nov 22, 2012 | 10:48 PM
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Prefer stock tips, what mufflers is in the kit? Mangaflow? Also, would be great if you could provide a drive by WOT video. Thanks for posting up.
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Old Nov 22, 2012 | 11:12 PM
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Dyno charts and all, I still call bulllsh*t on the HP claims, there is no way in hell there is a 30whp bottleneck in the stock mufflers
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Old Nov 22, 2012 | 11:18 PM
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Originally Posted by Lelix
Dyno charts and all, I still call bulllsh*t on the HP claims, there is no way in hell there is a 30whp bottleneck in the stock mufflers
Exactly my thought
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Old Nov 22, 2012 | 11:28 PM
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Did you dyno the before dyno the same day and just swap out mufflers and redyno the same day?
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Old Nov 22, 2012 | 11:29 PM
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Fabtech works fast

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Old Nov 23, 2012 | 12:28 AM
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No, you didn't pick up 25 and 40 with those mufflers. Long Tube Headers yes but not the mufflers.
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Old Nov 23, 2012 | 12:31 AM
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Dyno was next day.

Like I said +40 was the first pull. +25 was the rest of the pulls.

I agree on the welded on FTP logos.

I think they are magnaflow, but not 100% sure.

Yeah afraid to x pipe/delete now for sure...lol.

I see FTP got the #'s switched on their ad...
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Old Nov 23, 2012 | 12:36 AM
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Originally Posted by AMGPilot
No, you didn't pick up 25 and 40 with those mufflers. Long Tube Headers yes but not the mufflers.
LOL, the shop that installed the mufflers has nothing the gain by the +hp. They are the same guys that tuned my STi to 536whp last year and have no affiliation with FTP. Just a cool group of local guys I trust. That was the best of the pulls with the muffler that's all.
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Old Nov 23, 2012 | 12:52 AM
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When Magnaflow used my car to prototype a E55 exhaust system they built a cat back system and got SEVEN Wheel Horsepower and SIX foot/pounds of torque. Using those same mufflers. so yeah there is no way you got what you claim.
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Old Nov 23, 2012 | 01:36 AM
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Haters crazy
Those gains sound like kleemann header gains...
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Old Nov 23, 2012 | 01:54 AM
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Originally Posted by tbal
Those gains sound like kleemann header gains...
Actually sounds more like
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Old Nov 23, 2012 | 04:04 AM
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haters crazy
Originally Posted by Toadster
holy crap, that's some good power from a muffler swap :o

I can't imagine what the sound would be like with the resonator removed

The only gripe I'd have is the spot welded FTP logo on the muffler - those would eventually get rusty... much rather see a laser etched logo or even heat resistant silkskreen
Why would it rusty at the spot welds and not the rest of the welds? You know that mig welding isn't the only type of welding right?

And I'm also skeptical on the gains
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Old Nov 23, 2012 | 05:16 AM
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you would be lucky to see 10hp gain on my 224dynojet. dynos do not mean everything but mine has never spit out a goofy number all are numbers are backed up by the track times and are =.
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Old Nov 23, 2012 | 08:16 AM
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I call BS!! theres no way it gave those gains. Craptech continues to make a mockery of himself. If just mufflers give those gains, what is the need for headers then??
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Old Nov 23, 2012 | 08:28 AM
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The dyno used to by the OP is Dynapack. From My experience those dynos tend to read very very inaccurate. Lets see some Mustang or Dyno Dynamics dyno numbers!
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Old Nov 23, 2012 | 09:26 AM
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Originally Posted by Hulk
I call BS!! theres no way it gave those gains. Craptech continues to make a mockery of himself. If just mufflers give those gains, what is the need for headers then??
How do you know these mufflers dont give you these gains? Do you have any dyno info leading us to believe otherwise? Just wondering since you seem to know all..

To gain even more power.. Thats like saying i got 20 whp from a certain pulley, but why go to a larger pulley? Why, because you will likely make more power..

Your logic is pathetic
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Old Nov 23, 2012 | 09:36 AM
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Pig boy, you never cease to amaze me and any others with common sense, these mufflers will NOT give those gains, period, not even magnaflow will quote those rediculous Whp numbers, but what else can be expected by pig boy

NOT TO MENTION THAT THIS CHARLATAN HAS BEEN BANNED FROM HERE

go swing off his nut sack some where else pig boy
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Old Nov 23, 2012 | 10:23 AM
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Originally Posted by Hulk
Pig boy, you never cease to amaze me and any others with common sense, these mufflers will NOT give those gains, period, not even magnaflow will quote those rediculous Whp numbers, but what else can be expected by pig boy

NOT TO MENTION THAT THIS CHARLATAN HAS BEEN BANNED FROM HERE

go swing off his nut sack some where else pig boy
Wait, where is your info that these muffler wont make these gains? Where is your 10 second slip by the way
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Old Nov 23, 2012 | 10:24 AM
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Craptech!!!! Those will be rusted off in 2 years! Clowns!!!!!
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