Stage kits for EVO
Please read the post, I posted just before yours.
Very true when dealing a mainly stock vehicles....but that argument goes out the window when one starts modding. But then again everyone runs to their local shops to get an engine dyno as soon as they throw on some parts


:roll eyes:



Very true when dealing a mainly stock vehicles....but that argument goes out the window when one starts modding. But then again everyone runs to their local shops to get an engine dyno as soon as they throw on some parts



:roll eyes:



You're talking out of your ass..
Stage kits are all talk. People sale stages to bank money of the purchaser. Companys come out with power stages as to sell you what you need. Others will put something "stage" as to let you know what Level its ranked at. ie: stage 2 clutch.
Best bet is to check the local forums for your platform and talk it up and gain some know how. Then apply that. Good luck. You need anything hit me up. I might know some people who know some people, who --- well you get it.
Best bet is to check the local forums for your platform and talk it up and gain some know how. Then apply that. Good luck. You need anything hit me up. I might know some people who know some people, who --- well you get it.
SO wait.. you're saying that dynos read more accurately and consistently when used to measure the power of a stock vehicle versus a modified one? How does that work exactly. Does the dyno know? Do you have to tell it? Does a stock Viper with more power than the average modified turbo'd Honda read more accurately on a given dyno just because it's stock?
You're talking out of your ass..
You're talking out of your ass..
The person I was responding to, stated that Manufacturers use engine dyno to determine how much HP their vehicles make. All of my previous post state that there are many factors/variables that could change the result of a dyno reading. For example, Temperature, Type of Dyno, etc. Same thing can be said about the track. For example, Temperature, Skill of Driver, etc. As I have also stated that track times and dyno numbers are informational tools used to access teh car's performance.
Realistically very few...I would venture to guess 1% get an engine dyno after every modification. It is really not practical.
Actually I'm retarded. And I have to disagree.
Corrections for air temp, altitude, etc., on a quality dyno will give you consistant results. If you're not getting repeatable readings on a dyno, the dyno is garbage and probably isn't being used correctly.
My point is that if you use different dynos, and get different numbers, how do you know which one is correct? How do you know if any of them are correct?
If you weighed yourself on 5 different bathroom scales, and got 5 different readings, which scale (if any) is accurate?
How can you possibly argue that taking a car to a track is a more consistent measurement of performance change than a dyno in a controlled environment? Are you going to graph your speed every foot along the track, and apply a transform to correct for track temp, humidity, air temp, barometric pressure, etc? And are you a professional driver who has the consistency to judge improvements of the order that you imply a dyno couldn't measure?
Corrections for air temp, altitude, etc., on a quality dyno will give you consistant results. If you're not getting repeatable readings on a dyno, the dyno is garbage and probably isn't being used correctly.
My point is that if you use different dynos, and get different numbers, how do you know which one is correct? How do you know if any of them are correct?
If you weighed yourself on 5 different bathroom scales, and got 5 different readings, which scale (if any) is accurate?
How can you possibly argue that taking a car to a track is a more consistent measurement of performance change than a dyno in a controlled environment? Are you going to graph your speed every foot along the track, and apply a transform to correct for track temp, humidity, air temp, barometric pressure, etc? And are you a professional driver who has the consistency to judge improvements of the order that you imply a dyno couldn't measure?
Actually I compare my track results with others of the same modification..thus giving me a better idea of how my car is doing. Sorry last time I benched race was......Oh shit never. Sitting behind a dyno sheet does what?
Not sure why you brought up the use of different dynos...since we all know they read differently.
Last edited by drunkard; Aug 3, 2007 at 10:42 AM.
What does bench racing have to do with anything? You're going all over the place here. I'm not sure why we're arguing because I have no clue what you're actually trying to say..
I'm still a little confused on what you're trying to say here.. It sounds like you're saying that dynos aren't worthwhile when measuring power after making modifications.. Would you rather see the power gain or loss on a nice accurate dyno graph, or try to figure out how much power (and where in the 3 dimensional world of load vs. RPM) you've gained or lost by taking it to the strip? You should be tuning for the new mods on the dyno way before going to the strip anyway.
My point is that it's better to actually measure power improvements that try to feel them by the seat of your pants at the track. A dyno can have corrections applied for changes in ambient conditions, that's a lot harder to do at the track AND throw human driving error into the mix..
I'm still a little confused on what you're trying to say here.. It sounds like you're saying that dynos aren't worthwhile when measuring power after making modifications.. Would you rather see the power gain or loss on a nice accurate dyno graph, or try to figure out how much power (and where in the 3 dimensional world of load vs. RPM) you've gained or lost by taking it to the strip? You should be tuning for the new mods on the dyno way before going to the strip anyway.
My point is that it's better to actually measure power improvements that try to feel them by the seat of your pants at the track. A dyno can have corrections applied for changes in ambient conditions, that's a lot harder to do at the track AND throw human driving error into the mix..
You seriously have reading comprehension problems dont you?
The person I was responding to, stated that Manufacturers use engine dyno to determine how much HP their vehicles make. All of my previous post state that there are many factors/variables that could change the result of a dyno reading. For example, Temperature, Type of Dyno, etc. Same thing can be said about the track. For example, Temperature, Skill of Driver, etc. As I have also stated that track times and dyno numbers are informational tools used to access teh car's performance.
Realistically very few...I would venture to guess 1% get an engine dyno after every modification. It is really not practical.
The person I was responding to, stated that Manufacturers use engine dyno to determine how much HP their vehicles make. All of my previous post state that there are many factors/variables that could change the result of a dyno reading. For example, Temperature, Type of Dyno, etc. Same thing can be said about the track. For example, Temperature, Skill of Driver, etc. As I have also stated that track times and dyno numbers are informational tools used to access teh car's performance.
Realistically very few...I would venture to guess 1% get an engine dyno after every modification. It is really not practical.
I'm done.
What does bench racing have to do with anything? You're going all over the place here. I'm not sure why we're arguing because I have no clue what you're actually trying to say..
I'm still a little confused on what you're trying to say here.. It sounds like you're saying that dynos aren't worthwhile when measuring power after making modifications.. Would you rather see the power gain or loss on a nice accurate dyno graph, or try to figure out how much power (and where in the 3 dimensional world of load vs. RPM) you've gained or lost by taking it to the strip? You should be tuning for the new mods on the dyno way before going to the strip anyway.
My point is that it's better to actually measure power improvements that try to feel them by the seat of your pants at the track. A dyno can have corrections applied for changes in ambient conditions, that's a lot harder to do at the track AND throw human driving error into the mix..
I'm still a little confused on what you're trying to say here.. It sounds like you're saying that dynos aren't worthwhile when measuring power after making modifications.. Would you rather see the power gain or loss on a nice accurate dyno graph, or try to figure out how much power (and where in the 3 dimensional world of load vs. RPM) you've gained or lost by taking it to the strip? You should be tuning for the new mods on the dyno way before going to the strip anyway.
My point is that it's better to actually measure power improvements that try to feel them by the seat of your pants at the track. A dyno can have corrections applied for changes in ambient conditions, that's a lot harder to do at the track AND throw human driving error into the mix..
For example...Person A dynoed 360 whp but ran 12.xxx at 112 mph. Person B dynoed 352 whp but ran 12.xxx at 116 MPH. please keep in mind same car with almost exact mods adn dynoed at the same place on same day. Race took place at same track against each other.
The 12.xxx ETs is important, but for the sake of this argument I will throw it out since we all know there are many factors that affect that number.
But looking at the trap speed obviously something is wrong with Person A's car when comparing the results with Person B.
Ideally if you plug in all of the variables in a dyno...you should get the exact reading. But in practice that is rarely the case. Most shops/dyno centers just throw the car up, do 2-3 pulls and then gives you a readout of WHP, TQ, and/or AFR.
Last edited by drunkard; Aug 3, 2007 at 03:34 PM.
If you need me to draw you a diagram please let me know.
Last edited by drunkard; Aug 3, 2007 at 04:47 PM.







