Eurocharged CAA Dyno Results
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Re: Eurocharged CAA Dyno Results
Originally Posted by Franc Rauscher
I get it. But since torque is what moves the car great improvements in torque, which the Eurocharged guys seem to have unlocked, means great improvments in performace.
So perhaps we need to stop talking about gains in HP?
roadster with a stick
So perhaps we need to stop talking about gains in HP?
roadster with a stick
Here is the page I saved: Horsepower vs torque
Re: Eurocharged CAA Dyno Results
Originally Posted by JimmyJames
Torque gets you going---Hp keeps you going. The old saying explain it like this---Hp is how hard you hit the wall; torque is how far you take the wall with you.
We depend on Torque.
Frankly, torque is the spunk of the Crossfire which makes it such fun to drive.
So again I say, why aren't we talking more about torque values than HP?
roadster with a stick
Re: Eurocharged CAA Dyno Results
Originally Posted by loungn14
Hey guys! Cool that you guys always bring up things that you don't understand, unlike some of the MB folks who just act like they know what's going on. A simple question and a lot of others can gain some valuable information!
Let's take this example.
The red line represents the stock run, and the blue line is the tuned after run!
Now, the top pair of colored lines is torque to the wheels, the bottom is horsepower to the wheels.
Now, numbers are just that numbers. Never look at dyno results on products and expect your car to do the same thing. The same car will dyno different numbers based on the environment (temperature/humidity) and day! Drive your srt out on a nice cool fall day, then drive it during late july and it will be noticeably different!
Our dyno is what is called a load bearing dyno (dyno dynamics) We chose this brand over others like a dynojet as when the car is run, the dyno places a load on the wheels to simulate the car running on the street. This way, when tuning the car, you will get the same performance on the street as the dyno! Not all dyno's are the same, and you can't compare results from one to the next. My car will put down 50whp more on a dynojet then our dynod. Numbers are just that, numbers. Can you feel a difference? Does the car perform differently at the track? Do you run lower et on the 1/4 mile? (with a 30wtq difference you definitely will)
Now, back to the graph.
Most people compare max to max when looking at numbers. What you really need to look at is the difference between the graphs at the various rpm ranges on the bottom (ramp)
In the posted graph let's look at the torque curve on the top. Look at around 2500 rpm. (just left of the B in BRAKE) You will notice that stock is around 165wtq. Now look at the tuned graph. Torque is now at 194ish. That quite a gain (approx 30wtq) at the beginning of the rpm band, when you're really getting into her, and very noticeable on the butt dyno. In the tunes, we also change things like the red line limit (bump it up), modify shift points, and modify fueling in that you actually will see a gain in mpg post tune. We do other things as well, but that should give you a good idea to start with.
Yes, technically there is a formula for calculating hp/torque. But, with simple changes in the programming of the car, we can alter the way the car performs. For example, lets take a car with a hp of 200 and torque of 200 on the dyno. I can remove some fuel and modify timing and increase the hp by 20hp, and then make some other changes and keep the torque the same while maintaining the increase in hp. By the formula, the reading should be the same, but it definitely is not.
We always assume 18-20% drive train loss in the cars, under ideal conditions. But, when you add miles to the car, things do change. Now add in the fact that two srt6 hand built engines can dyno within 15whp of each other stock for stock from the factory. Not every car is the same!
Make sense?
Let's take this example.
The red line represents the stock run, and the blue line is the tuned after run!
Now, the top pair of colored lines is torque to the wheels, the bottom is horsepower to the wheels.
Now, numbers are just that numbers. Never look at dyno results on products and expect your car to do the same thing. The same car will dyno different numbers based on the environment (temperature/humidity) and day! Drive your srt out on a nice cool fall day, then drive it during late july and it will be noticeably different!
Our dyno is what is called a load bearing dyno (dyno dynamics) We chose this brand over others like a dynojet as when the car is run, the dyno places a load on the wheels to simulate the car running on the street. This way, when tuning the car, you will get the same performance on the street as the dyno! Not all dyno's are the same, and you can't compare results from one to the next. My car will put down 50whp more on a dynojet then our dynod. Numbers are just that, numbers. Can you feel a difference? Does the car perform differently at the track? Do you run lower et on the 1/4 mile? (with a 30wtq difference you definitely will)
Now, back to the graph.
Most people compare max to max when looking at numbers. What you really need to look at is the difference between the graphs at the various rpm ranges on the bottom (ramp)
In the posted graph let's look at the torque curve on the top. Look at around 2500 rpm. (just left of the B in BRAKE) You will notice that stock is around 165wtq. Now look at the tuned graph. Torque is now at 194ish. That quite a gain (approx 30wtq) at the beginning of the rpm band, when you're really getting into her, and very noticeable on the butt dyno. In the tunes, we also change things like the red line limit (bump it up), modify shift points, and modify fueling in that you actually will see a gain in mpg post tune. We do other things as well, but that should give you a good idea to start with.
Yes, technically there is a formula for calculating hp/torque. But, with simple changes in the programming of the car, we can alter the way the car performs. For example, lets take a car with a hp of 200 and torque of 200 on the dyno. I can remove some fuel and modify timing and increase the hp by 20hp, and then make some other changes and keep the torque the same while maintaining the increase in hp. By the formula, the reading should be the same, but it definitely is not.
We always assume 18-20% drive train loss in the cars, under ideal conditions. But, when you add miles to the car, things do change. Now add in the fact that two srt6 hand built engines can dyno within 15whp of each other stock for stock from the factory. Not every car is the same!
Make sense?
Guess I need to start saving my pennies for a Chicago trip soon... I'd like a tune, but I want it to be "dyno tuned" to compensate for the uniqeness of the motor. As you said, two of the "same" engines can be very different in how they behave.
The extra 30 RWTQ would be awesome for me, especially at that 2500 rpm range. After all, in my coupe, when I'm on the interstate at 70-75 mph, the tach stays around 2500 RPM.
In the twisties, it would be a freaking blast.
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Re: Eurocharged CAA Dyno Results
Eurocharged Custom Srt6 Tune
VIN: 059088- John
Jake please give me your interpretation of my graph. Why do I show the lowest Max HP (258) of all the SRT 6s and don't tell me "somebody's gotta be lowest. I'm curious as to the reason for it. 'splain me please my lines.
John P
FTroopChief
VIN: 059088- John
Jake please give me your interpretation of my graph. Why do I show the lowest Max HP (258) of all the SRT 6s and don't tell me "somebody's gotta be lowest. I'm curious as to the reason for it. 'splain me please my lines.
John P
FTroopChief
Senior Member
Re: Eurocharged CAA Dyno Results
Maybe you drive like a granny? The PCM does learn your driving style. I don't have a real answer for you but I've been on several dyno's and have numbers from 219 to 288 hp. What matters is how the car performs. I was devastated by my numbers but I know the car is wicked fast and the tires can't handle more than what I have anyway. But its always possible that you have a weaker motor than most. That was my big fear. I had to outrun a few Porsches at the track before I began to chill about the numbers. I hate dyno's. If the tires slip a bit the numbers are low. If the motor is iced the numbers are high. If the motor is hot the numbers are low. My head hurts. I would concentrate on the improvement for sanity's sake and forget the highest number.
Les
Les
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Re: Eurocharged CAA Dyno Results
Originally Posted by velociabstract
Maybe you drive like a granny? The PCM does learn your driving style. I don't have a real answer for you but I've been on several dyno's and have numbers from 219 to 288 hp. What matters is how the car performs. I was devastated by my numbers but I know the car is wicked fast and the tires can't handle more than what I have anyway. But its always possible that you have a weaker motor than most. That was my big fear. I had to outrun a few Porsches at the track before I began to chill about the numbers. I hate dyno's. If the tires slip a bit the numbers are low. If the motor is iced the numbers are high. If the motor is hot the numbers are low. My head hurts. I would concentrate on the improvement for sanity's sake and forget the highest number.
Les
Les
John P
ftroopChief
Re: Eurocharged CAA Dyno Results
Originally Posted by FTroopChief
Eurocharged Custom Srt6 Tune
VIN: 059088- John
Jake please give me your interpretation of my graph. Why do I show the lowest Max HP (258) of all the SRT 6s and don't tell me "somebody's gotta be lowest. I'm curious as to the reason for it. 'splain me please my lines.
John P
FTroopChief
VIN: 059088- John
Jake please give me your interpretation of my graph. Why do I show the lowest Max HP (258) of all the SRT 6s and don't tell me "somebody's gotta be lowest. I'm curious as to the reason for it. 'splain me please my lines.
John P
FTroopChief
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Re: Eurocharged CAA Dyno Results
Originally Posted by billvp
what are your mods compared to the others'?
Thanks!
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Re: Eurocharged CAA Dyno Results
Originally Posted by ProjectMayhem
Not from CAA event but it was done by Eurocharged last summer after the modifications were done and on the "heartbreaker". Wish i could of had Jerry put his hands on it to see if he could improve on tony's
.Was stock vs new tune.
Maybe I can dig him up for another tune....but, I think Jake will do fine once the bs is taken care of....
Re: Eurocharged CAA Dyno Results
Originally Posted by ProjectMayhem
Not from CAA event but it was done by Eurocharged last summer after the modifications were done and on the "heartbreaker". Wish i could of had Jerry put his hands on it to see if he could improve on tony's
.Was stock vs new tune.
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