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Discussion Starter #1
I have a 2nd gen special edition zx10 2007. i have yosh carbon fiber trc slipons, kn airfilter, amsoil 10/40, and pcIII, with the twobrothers slip-on map-m222-03. i decided to make a pass on the dyno to see if any tuning was necessary. turns out the air fuel ratio was dead on the money. my peak horse power was 160.22 and my peak torque was 76.76. the torque jumped above 60 right off and never came below it. what do you think?????:dontknow:
 

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Runnin' good Big Doe. You can spend a ton of $ looking
for a few more Hp. I've done it several times.

Get that suspension dialed in and enjoy the twisty roads
with us on Sundays.

You missed a good one today. I'll send you a few pics.
 

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sorry took so long to respond. the run conditions was as follow. 82.72 F, 29.27-Hg, Humidity 51%, STD: 1.05. This was on the sheet my mechanic gave me. Some of the things I didnt know about but I was so excited to win a beer I didnt ask. He guessed it to have no more than 155 and I went bold and said 160. It made 160.22 and he about shit. LOL now I have the strongest Stock 10 at his shop. He compared my numbers to some first Gens and I have them by at least 5 horses. WooHoo!!!! He also stated that he had been inside of a few and they were the ports were polished from the factory. Big up to Kawasaki..:thumbsup:
 

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I posted it in the other column just now figuring out how to post and stuff like that. but Ill give it to you--82.72 degrees F, 29.27-Hg, Humidity:51%, STD:1.05 These were the numbers on the sheet. Think it would have done better cooler?
 

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two bros suck.
 

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Yes they do, I concur with that. I had a two brothers once, shot rivet's like I was shooting bullets
 

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I just think a real exhaust like an arka, racefit, or even a Leo vince would put him around 165.

Remove the flies!
 

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Dont mess wit White Ninja
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I have a fmf apex titanium/carbon exhaust and love it and it put down better numbers then a zx10r with a level one and power commander III, which I dont know how that happen cause I just have my secondary's gone,bolt on pipe, air filter etc. He had a shity map or something
 

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Discussion Starter #13
Maybe on a cooler day and a full system I can get 170. And maybe close to 80 on the torque. Although I am not a racer so 160 is all good for me. Thanks everyone for the replies.
 

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Thats a good exhaust for sure, seen it on a lot of 10's, sounds good too. But yeah I was the same way but I just come to the point do I want an exhaust that will last and may cost a little $$ or an exhaust thats a piece and wont last on top of being cheap. You do the math even though I know a two brothers is the same price as my fmf exhaust but if you could set my fmf nexted to a two brothers and compare them. The two brothers looks like it was made by children. Just my .02 cents but I learned my lesson already!!

I have seen 176hp with 82 lbs of torque on a 08 zx10r with a full exhaust,pcv,air filter,+1 in the rear and some other shit!! Numbers might be high in my book but numbers are numbers, its all about feel in my any ways right!!
 

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Thats a good exhaust for sure, seen it on a lot of 10's, sounds good too. But yeah I was the same way but I just come to the point do I want an exhaust that will last and may cost a little $$ or an exhaust thats a piece and wont last on top of being cheap. You do the math even though I know a two brothers is the same price as my fmf exhaust but if you could set my fmf nexted to a two brothers and compare them. The two brothers looks like it was made by children. Just my .02 cents but I learned my lesson already!!

I have seen 176hp with 82 lbs of torque on a 08 zx10r with a full exhaust,pcv,air filter,+1 in the rear and some other shit!! Numbers might be high in my book but numbers are numbers, its all about feel in my any ways right!!
He doesn't have a two bros. exhaust. He is running the Yosh. Slip on w/
Two Bros slip on map.
 

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wow some crazy correction factors are being used lol
 

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clarIfy please I don't understand the correction factors. So is this a good measure of my horsepower? Or is it some bull. :dontknow:
I'll try. There are basically 2 ways most dynojet dyno operators use to measure HP. STD and SAE. There is (i think) and uncorrected option as well, but nobody uses that. Most dynos will run SAE.

STD #'s use a correction % from a lower temp. than SAE measurements. That makes the correction factor greater and is alot of the reason why STD HP #'s usually read 3-6 hp higher than SAE depending on HP.

Temp. really shouldn't matter too much on the dyno with the proper correction being used. Thats what its for.

Hope that makes some sense.

Dyno HP # debates will never end. If Dan has had other 10's on the dyno and yours is putting out the highest HP #'s you should be thrilled. Comparing your #'s to someone elses off of another dyno doesn't mean anything. Bragging rights at most.
 

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Copied and Pasted. Simply put.

A lot of people have been asking about SAE .vs STD Dyno numbers so I thought this would help. Most people know that showing STD numbers read higher but not many know why. SAE represents more realistic standard conditions, STD artificially boosts numbers.

Identifying Your Correction Factor:
Dynojet:
If you look at a dynojet graph in the upper right corner, you will see where it says the correction method being used. The options are SAE, STD, Uncorrected and a few not needed for discussion. You will also notice a smooth factor (up to 5) which dyno operators use to make the power curves and any other data displayed, such as AFR, seem more accurate and smooth. You will also see AFR graphs scaled DOWN to hide flaws in the curve.

MD:
A Mustang Dyno ONLY uses SAE Corrections. Smoothing can also be controlled as well as scale for the Graphical Outputs.


Overview:
Most of the stated horsepower numbers are “Corrected” values. The correction standards were developed to discount the observed horsepower readings taken at different locations and weather conditions. It is obvious that an engine builder in Colorado could not produce as much horsepower as a shop at sea level. There is just less oxygen for the engine to burn at the higher altitude. What are less obvious are the other weather condition effects on the engine. So in order to compensate for this all advertised horsepower is “corrected” to several different industry standards.

SAE:
"SAE (Society of Automotive Engineers), USA. Power is corrected to reference conditions of 29.23 InHg (99 kPa) of dry air and 77 F (25°C). This SAE standard requires a correction for friction torque.

STD:
STD is Another power correction standard determined by the SAE. Power is corrected to reference conditions of 29.92 InHg (103.3 kPa) of dry air and 60 F (15.5°C). Because the reference conditions include higher pressure and cooler air than the SAE standard, these corrected power numbers will always be about 4 % higher than the SAE power numbers. Friction torque is handled in the same way as in the SAE standard."



Here is some quick math (using assumptions and round numbers):

STD:
Air Temperature: 60F
Absolute Pressure: 29.92 inches Hg
Relative Humidity: 0%

Relative Horsepower : 104.8%
Air Density: 1.223kg/m3
Relative Air Density: 99.8%
Density Altitude: 67feet
Virtual Temperature: 60F
Vapor Pressure: 0 inches Hg
Dyno Correction Factor: .955

SAE:
Air Temperature: 77F
Absolute Pressure: 29.23 inches Hg
Relative Humidity: 0%

Relative Horsepower : 100%
Air Density: 1.157kg/m3
Relative Air Density: 94.4%
Density Altitude: 1952feet
Virtual Temperature: 77F
Vapor Pressure: 0 inches Hg
Dyno Correction Factor: 1
 

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i ask for my dynos in sae with a cf of 1 (no correction)
 
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