AKRAPOVIC EXHAUST DYNO DIFFERENCE

[AQUADIOSMED]

at 6500 miles, box stock, spark plugs never out, stock air cleaner, air box:

............153.7 hp
>>>>>>>>>>>>97.7 torque

Akraopovic + Dynojet P-C 2 commander
........... 165 hp
<<<<<<<<<<< 101 torque
[STILL COMPLETELY STOCK AIR BOX-AIF FILTER]

biggests gains:

2600 to 3800 5 - 7 more torque and 2 to 12 MORE hp ... SAME SPOT "stock" dips in hp;

from about 5000 rpm the Akro outperfoms stock FROM 5 to 11 hp THROUGH THE POWER CURVE;


SINCE THE AKRO & P-C-2

it drives great, VERY SMOOTH, GREAT THROTTLE RESPONSE;

more "low-mid-hi-end";

quiet;

PROBLEMS:

has some "lower" fairing issues ... rubs lower at the "bolt holes" needs "padding";

the Titanium Can logo "shrunk" ... may ask for can to be replaced

DYNO JET HAS TWO NEW MAPS:

COMPLETE STOCK
AIR BOX MODS ...

TURBO RICK DYNOED WITH "ADMITTED" AIR BOX MODS ??? WHO KNOWS WHAT ELSE ???

... THAT IS 4 HP MORE THAN STOCK AIR BOX AND AIR CLEANER ... SEEMS LIKE A STABLE NUMBER REPORTED OVER TIME ... RICK'S IS PROBABLY STOCK ???

 

[OB_RobBase]

Thanks Aqua, this is the post I was waiting for since I made the decision to buy a Akrapovic pipe and hold off on modifying the airbox. After reading your results my airbox will stay stock except for the addition of a BMC air filter. Most of my riding is done at the lower rpms (2000-6000) and I would gladly trade big gains in HP at redline for big gains in the low-midrange. It seems like this combo gives the best of all worlds.

 

[OB_RobBase]

One more thing Aqua, do you have any way to post a picture of your dyno charts, stock & with Akrapovic?
Also can I assume you used the map for "stock w/Akrapovic" from Dynojet's website?

[This message has been edited by RobBase (edited 16 January 2000).]

 

[OB_FRQ FLYR]

AQUADIOSMED,

Did you make any changes to dynojets PCII map for the Akrapovic?
If so how did you do it, and was it difficult?
Also, are you going to try a different end can with the Akrapovic?

Joe

 

[OB_turbo1300]

Nice numbers and results. Where did you get the pipe and the pc2 from? What actually shrunk on the can? How did it shrink? Never heard of that before, is that something we should start looking out for? Thanks for all the info.

 

[OB_Johnnycheese]

thank you for posting real results .
I like the way you did it. One item at a time.

 

[AQUADIOSMED]

TURBO 1300:
THE PC 2 IS DYNO JET;

AKROAPOVIC FROM CYBERCYCLE "ART NINCI";

THE "AKROAPOVIC LOGO" IS ON THE TITANIUM CAN, IT SIMPLY "SHRUNK & SAGGED" UPPERMIDDLE
TO THE UPPER RIGHT AS YOU LOOK AT IT;

MIKE BELCHER SAID IT WAS FINE "BEFORE THE DYNO RUN" ... MUST HAVE BEEN HEAT ???

Obviously we don't like to put "expensive, state of the art titanium exhaust systems on our "busas" with the manufacturer's name and trademark barely legible because the logo "shrunk" ...

However, the "fairing "rub" @ bottom is the biggest "real problem" ...

could burn the fairing without proper
"padding ...

I folded some Kaiser" foil {for cooking} and padded the lower-middle, so far no problem, plastic gets "hot-warm" ... you can touch it without any burn, but one bolt rests on the exhaust ... it is "hot"!

Plastic is o.k.

 

[OB_Turbo Rick]

My bike only lost 3HP at 3500rpm after that it made HP

Turbo Rick

Stock

RPM POWER
2500 29.5
2600 32.7
2700 35.6
2800 38.0
2900 39.9
3000 41.4
3100 43.5
3200 47.5
3300 50.3
3400 53.2
3500 56.2
3600 58.1
3700 59.2
3800 60.5
3900 61.7
4000 62.9
4100 64.9
4200 67.5
4300 69.7
4400 71.4
4500 72.6
4600 74.4
4700 76.8
4800 79.0
4900 81.1
5000 82.9
5100 84.6
5200 86.2
5300 89.4
5400 91.9
5500 94.7
5600 97.2
5700 100.0
5800 102.9
5900 104.5
6000 106.5
6100 108.5
6200 110.3
6300 113.4
6400 115.5
6500 118.4
6600 121.3
6700 124.1
6800 126.4
6900 128.5
7000 130.3
7100 132.1
7200 133.9
7300 136.0
7400 136.5
7500 138.3
7600 139.5
7700 141.5
7800 143.3
7900 144.4
8000 146.0
8100 148.3
8200 148.7
8300 150.0
8400 150.7
8500 151.6
8600 153.0
8700 153.0
8800 153.8
8900 153.6
9000 154.4
9100 154.6
9200 155.0
9300 155.0
9400 154.6
9500 154.9
9600 155.1
9700 154.4
9800 153.5
9900 153.6
10000 153.4
10100 152.1
10200 151.3
10300 150.0
10400 149.3
10500 147.5
10600 147.1
10700 144.4
10800 143.9
10900 142.5



Akapovic and airbox mod

2500 32.8
2600 35.7
2700 38.4
2800 41.0
2900 42.9
3000 44.9
3100 47.1
3200 48.6
3300 49.9
3400 51.4
3500 52.9
3600 54.7
3700 56.4
3800 57.8
3900 59.8
4000 61.7
4100 63.9
4200 66.4
4300 68.4
4400 70.4
4500 73.0
4600 75.6
4700 78.0
4800 80.0
4900 82.1
5000 84.6
5100 86.8
5200 89.4
5300 91.6
5400 94.2
5500 96.9
5600 100.1
5700 103.9
5800 107.5
5900 109.5
6000 110.5
6100 112.8
6200 116.4
6300 120.7
6400 121.9
6500 122.9
6600 126.6
6700 131.5
6800 132.1
6900 132.5
7000 137.5
7100 138.5
7200 137.8
7300 143.1
7400 140.2
7500 144.8
7600 144.8
7700 147.7
7800 150.3
7900 152.1
8000 154.1
8100 156.9
8200 155.7
8300 160.3
8400 158.0
8500 160.8
8600 163.7
8700 162.1
8800 162.0
8900 163.3
9000 164.7
9100 165.6
9200 164.9
9300 164.7
9400 165.8
9500 165.6
9600 166.9
9700 167.4
9800 166.8
9900 164.3
10000 164.4
10100 167.4
10200 168.3
10300 165.2
10400 163.5
10500 162.2
10600 163.3
10700 158.1

 

[OB_turbo1300]

Rick, are you having problems out of your can and fairing like the good doctor?

 

[OB_Turbo Rick]

The cans have this sticker that says Akrapovic on them.
The Doctors sticker wrinckled, I am sure Lockhart Philips will give him a replacement sticker for free.
There is nothing wrong with the cans. On the street the cans will never get as hot as on the dyno. Mine didn't wrinckle.

Turbo Rick

 

[OB_turbo1300]

Is your lower fairing melting like he think his is. I know you have had yours on there for a while so I was wonder does your fairing lay on the pipe and if so what did you do about it. I have had my akr. pipe on my bike since Sept. and I have had numerous dyno pulls and there has never been a problem. Maybe I am luck that I have a carbon fiber can. I pipe was a tight fit at first but it doesn't rub or touch anything. Let us know if yours or anyone else with a akr. pipe if you lower fairing is melting.

Thanks

 

[AQUADIOSMED]

ROB BASE:

SORRY, I DO NOT HAVE A SCANNER.

Mike Belcher at Dyno jet used my all stock "busa" with the "stock-air-box-filter" to make the map for the Akroapovic so that dyno jet had one for all pc 2 users, the map may be on the webb site now, call or e-mail Mike Belcher at Dyno Jet ... the mapping and install was done on 1-14-99 at D-J in Las Vegas

 

[AQUADIOSMED]

FRQ FLYR- JOE:

Mike Belcher at Dyno jet used my "busa" for the "original mapping of the system". He wanted a "box stock" no mods busa for the mapping.
He installed the system.

I provided the "busa" he did all the "dyno" work in private, would not let me watch or be a part of the process.

Ironically, because the can logo "shrunk" I may get a replacement "can" ... if that works out I hope to use the "sidekick" ... it is up to "Art Ninci" ... I am going to try to reach him later today to work oout details.

Other than the "fairing" and "logo" problems the system has made the "busa" more driveable, better low end-usable torque, very smooth, power at all rpms, no flat spots or dips ... performance is very good just as dyno jet set the mapping ... the "busa" is very happy with the performance and sound ... now if we could just get the can fixed????

 

[OB_SlowHand]

Chris, far be it from me to tell you or people like you what your power band should be. You are into hard numbers on the strip, and you either know now or will know what works.
The numbers Turbo Rick posted look good. Some posts I've seen mention a much bigger trade off.
I like high numbers, I just don't want the bike to be a slug until it hits 8000 to 10000rpm.

[This message has been edited by SlowHand (edited 17 January 2000).]

 

[OB_c.dolan]

To Slowhand: It would be hard to make it a slug, under 8000 rpm, even if you wanted to. I did read a post about a 33 hp version, in England, I believe. It was "restricted" in throttle movement, and intake capacity. It was de-fanged, for so-called, new licensees. Could be brought back to life, after some sort of probation period.

 

[OB_SlowHand]

I'm with Rob Base, taking horsepower from the low end or midrange and moving it to redline only makes sense if you're going to the track or strip, and maybe not even there. Who cares if the bike makes 180hp, if you have to go to 13000rpm to get it. A peaky open class bike makes no sense to me. If that's what you want, buy a ZX12.
Aqua., fine post! Real world stuff.

 

[OB_Deadly Impact]

Great numbers! And just what I wanted to hear, my akro pipe should be in this week.

Was it easy to install? Any tips?

Did you disable the PAIR or remove it?

I am going for the BMC, and air box mod too.

 

[OB_c.dolan]

If airbox mod lessened bottom end, I sure wouldn't know it. One thing I did do, to improve it, was to adjust PC II, up 2 notches, on low setting. Per instructions, it can be done easily, without laptop. Also noticed that bike wanted slightly different settings at track, than dyno. Dyno just gets you into ballpark......................... ...Have air box cut just enough, so filter would still have contact on bottom. Did not want to gut entire bottom. Bike dynoed @ 164 hp. Same shop says they been getting about 2 hp more out of Akra pipe, on the average.

 

[OB_Bob]

Aquadiosmed
Your numbers look very similar to mine with the Micron Pipe. I have questioned the airbox mod at low rpms for a while now. It hurts you down low---2500-3500 especially. Suzuki did not install it to raise manufacturing costs.
It was to even out intake air velocity.

Microm supplies you with an adhesive padding with an aluminum side. You stick this to the inside of your fairing to prevent heat damage. The Micron does not contact the fairing but gets close.

DynoJet won't let you watch the session, wonder why?
I know they resistor out at least one sensor, after talking with them early last year.
They claimed it kept ECM variation from run to run out of the mix.
They are compensation sensors that add or take away fuel.
DynoJet should have the ability(software) to run comparison dyno curves for all the Busa's and there pipes/mods they worked on.
Bob

 

[OB_Turbo Rick]

It looks like I screwed up with the correction factors (whoops)and it didn't do 168HP it did 166HP the correct graphs are up at.
http://www.turborick.com/busa/168.jpg
Upon inspection the air filter was very dirty ( all thoses dry lake bed runs ) and the chain has a tight spot that is the reason for the rough graph so I put a new chain and sprockets on. I am checking everything over like I should have done before I went to Dynojet and will put it on the dyno again this weekend.
Turbo Rick



[This message has been edited by Turbo Rick (edited 18 January 2000).]