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      04-19-2011, 03:28 PM   #1
Bob MG
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Akrapovic Sound with SS catless DP's

Nate you champion!!

The box finally arrived!!!

I am not going to waffle on about how amazing the system looks and the quality blah blah

IND are champs, Nate is a champ etc etc

everyone whining like girls about not loud enough, not cool enough, not aggressive enough

Check this out:



AT IDLE



CRUISING IN DRIVE



CRUISING IN M DYNAMIC SPORT MODE


Last edited by Bob MG; 04-20-2011 at 11:40 AM.
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      04-19-2011, 04:47 PM   #2
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That sounds amazing! Very similar to many turbocharged V8 race cars.

Its funny to keep reading about people complaining how quite/weak sounding the X///M engine is with the stock exhaust... Little do they realize cause is the factory catalyst. Once removed the true sound of the V8 TT w/ 600+hp comes to life.

I can't wait to put my downpipes on in a few weeks.
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      04-19-2011, 05:32 PM   #3
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that sounds insane!
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      04-19-2011, 07:47 PM   #4
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I love it!
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      04-19-2011, 09:27 PM   #5
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I was waiting for this.....OMFG

Sounds sick, almost viper like....F-1 like.,,,

How about a little clip from the exterior pretty please

I think I'm fully doing this mod....
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      04-20-2011, 12:28 AM   #6
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My god it sounds good finally a great sounding exhaust and video.

Also a video outside would be wonderful
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      04-20-2011, 12:38 AM   #7
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Quote:
Originally Posted by northern2020 View Post
I was waiting for this.....OMFG

Sounds sick, almost viper like....F-1 like.,,,

How about a little clip from the exterior pretty please

I think I'm fully doing this mod....
My arms aren't long enough to hang out the back LOL

I will see what I can do, maybe get my wife to video me cerraring down the road like a toss to record my exhausts sound NOT!!

all jokes aside I will do some regular driving speeds so you can hear idle and low revs

It's actually sounds quieter at low rpm with the akra fitted than before with SS DPs and the OEM bitch can.

The sound was very farty like since the engine was breathing more air down the OEM rear section and it sounded a little wierd to say the least.

Now at idle and low rpm, it's sounds like there are 670 Horses biting each others asses to kick out.

On pull away it settles the irritaiing flapping sound I got before (a bit like putting some cardboard in your wheel spokes as a kid to pretend you were on a Harley) and now it's sounds like a proper V8 TT

On flat out it sounds a little raspy and high pitched like a Ferris CS stradale. (I had one, so sorry of analogy is a bad one)

Stay tuned, shoot me a pm if anyone needs any assistance on this as the whole project was a first since there were no real write up on the SS DPs before I bought mine, plus the ESS 100 RON tune and finally the 5 month wait for the Akra.
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      04-20-2011, 12:46 AM   #8
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woowwwww wooowwwww wooowwwwww!!!! that sounds like a Maserati GT with a sport line exhaust. should i just put sport cats to get this sound? what sport cats did u get?
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      04-20-2011, 01:22 AM   #9
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Omg sounds like sex!
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      04-20-2011, 10:26 AM   #10
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Quote:
Originally Posted by Bob MG View Post
Quote:
Originally Posted by northern2020 View Post
I was waiting for this.....OMFG

Sounds sick, almost viper like....F-1 like.,,,

How about a little clip from the exterior pretty please

I think I'm fully doing this mod....
My arms aren't long enough to hang out the back LOL

I will see what I can do, maybe get my wife to video me cerraring down the road like a toss to record my exhausts sound NOT!!

all jokes aside I will do some regular driving speeds so you can hear idle and low revs

It's actually sounds quieter at low rpm with the akra fitted than before with SS DPs and the OEM bitch can.

The sound was very farty like since the engine was breathing more air down the OEM rear section and it sounded a little wierd to say the least.

Now at idle and low rpm, it's sounds like there are 670 Horses biting each others asses to kick out.

On pull away it settles the irritaiing flapping sound I got before (a bit like putting some cardboard in your wheel spokes as a kid to pretend you were on a Harley) and now it's sounds like a proper V8 TT

On flat out it sounds a little raspy and high pitched like a Ferris CS stradale. (I had one, so sorry of analogy is a bad one)

Stay tuned, shoot me a pm if anyone needs any assistance on this as the whole project was a first since there were no real write up on the SS DPs before I bought mine, plus the ESS 100 RON tune and finally the 5 month wait for the Akra.
No offense, but I think 670 hp may be a bit of a overestimation?

I can't see where the jump in hp occurs

Tune~ 50-60 for 100 RON
exhaust ~ 10-12
Dp's your thinking ~ 50-60?

Would love to see your beast dyno'd

Not trying to be negative, just would like to see hard numbers
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      04-20-2011, 10:33 AM   #11
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This is ESS dyno of 95 RON tune and SS Cat-less DPs

I have the 100 RON tune plus the Akrapovic Evolution

Hammann makes 670 HP what they got that I don't?

Maybe AJ can chime in here?
Attached Images
 

Last edited by Bob MG; 04-20-2011 at 10:38 AM.
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      04-20-2011, 10:49 AM   #12
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In cabin sounds much more crisp than factory
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      04-20-2011, 12:14 PM   #13
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Quote:
Originally Posted by Bob MG View Post
This is ESS dyno of 95 RON tune and SS Cat-less DPs

I have the 100 RON tune plus the Akrapovic Evolution

Hammann makes 670 HP what they got that I don't?

Maybe AJ can chime in here?
I believe hamman may have a turbo upgrade, which would boost the hp numbers up quite a bit.

I had read that on some board somewhere
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      04-20-2011, 12:53 PM   #14
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Quote:
Originally Posted by northern2020 View Post
I believe hamman may have a turbo upgrade, which would boost the hp numbers up quite a bit.

I had read that on some board somewhere
you are correct, AJ mailed me and confirmed
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      04-20-2011, 11:56 PM   #15
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aaaahhhhhhhhh i just finished!!!!
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      04-24-2011, 10:22 AM   #16
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This is off Hammann website:

http://www.hamann-motorsport.com/en/...engine-tuning/


HAMANN* SPORTKIT HM 670 *
Power increase up to 670 hp / 493 kW
Max. Torque 950 Nm at 1.500 - 5.650 rpm
V/max 300 km/h
Consisting of:
HAMANN Catalyst replacement pipes** Item-No.: 50 071 550
HAMANN Sport rear muffler with 4 tailpipes
HAMANN Optimized curve maps specially for
* * * * * * * Sportkit HM 670
HAMANN Deactivation of standard 250 km/h speed limit
Tires have to cope with higher maximum speed !
! Export only !

The technical data given refers to the German version.
Due to certain legal regulations in different countries,
deviations in the technical data described here can accur.
Results may vary depending on basis engine, vehicle
equipment, transmission, gear and final drive ratios,
wheel/tire combination, etc. To reach the maximum
power of petrol engines, you need to use top graded
fuel Super Plus 98 ROZ.

* It is explicitly stated that the * marked parts are
** race sport parts without german TÜV approval !
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      04-26-2011, 03:01 AM   #17
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regardless of 670hp or not, man.... this is nuts, sounding awesome and amazing, a true beast to be heard and shown

well done, Bob, thanks for sharing, now i am thinking to remove my Eisenmann for Ak
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      04-26-2011, 08:28 PM   #18
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does it require a tune? I have already had a dinan x6m tune on my car, i don't know if it works with the ss carless dp.
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      04-27-2011, 04:31 AM   #19
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Quote:
Originally Posted by tonymac1 View Post
does it require a tune? I have already had a dinan x6m tune on my car, i don't know if it works with the ss catless dp.
Normal tune and catless tune are different. Also the catless downpipes will throw a CEL and the ESS catless tune will sort that issue out

Check out the differences on the dyno above.
First one is with stock cats and 95 RON fuel tune
Second one is for catless 95 RON tune
(NOTICE HOW THE CAT-LESS HEADERS ALLOW THE POWER TO GAIN AS MUCH ON THE TOP AS THE MID RANGE FROM STOCK, WHILE THE TUNE WITH OEM HEADERS LOSES THE POWER GAIN RATIO ON HIGHER RPM RANGE)

I haven't dynoed but mine has the Akrapovic rear section which is good for another 10 hp and 15 torque, plus I have tune for 100 RON which I'm sure is good for anther 10 -15 hp also and a shit house full of torque

ESS has tunes for both options as well as different fuel used

I have 2 tunes from ESS:
1. catless 95 RON
2. catless 100 RON fuel
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      04-27-2011, 08:56 PM   #20
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Quote:
Originally Posted by Bob MG View Post
Normal tune and catless tune are different. Also the catless downpipes will throw a CEL and the ESS catless tune will sort that issue out

Check out the differences on the dyno above.
First one is with stock cats and 95 RON fuel tune
Second one is for catless 95 RON tune
(NOTICE HOW THE CAT-LESS HEADERS ALLOW THE POWER TO GAIN AS MUCH ON THE TOP AS THE MID RANGE FROM STOCK, WHILE THE TUNE WITH OEM HEADERS LOSES THE POWER GAIN RATIO ON HIGHER RPM RANGE)

I haven't dynoed but mine has the Akrapovic rear section which is good for another 10 hp and 15 torque, plus I have tune for 100 RON which I'm sure is good for anther 10 -15 hp also and a shit house full of torque

ESS has tunes for both options as well as different fuel used

I have 2 tunes from ESS:
1. catless 95 RON
2. catless 100 RON fuel
sorry im a noob, i don't know much about that but i do know my dinan tune has gained about 50 horsepower for my x6m, i just want a new exhaust with a more agressive sound, which one do you suggest? eisenmann meisterschaft or akra?
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      05-05-2011, 05:44 AM   #21
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      05-05-2011, 06:02 AM   #22
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Quote:
Originally Posted by Bob MG View Post
you are correct, AJ mailed me and confirmed
So they use the turbo upgrade to get to 670hp, would explain why the kit is so bloody expensive. But on that note i would have thought that their kit would have made more, isn't your car making close to or 670hp without the turbo upgrade.

The car is 408kw stock and only 493kw with the Hamman kit, so thats a 85kw gain for $16,000
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