Whipple dyno results

[Nawsad123]

So many things about this don’t make sense.

About my graph..?

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[Nawsad123]

why do your graphs TQ and HP numbers not cross at 5250ish RPM?

Mine cross right around 6800

 

[Nawsad123]

Not a real apples to apples comparison given the higher gen 3 compression and different power adders. Depending on your power goals you need fuel system more than need forged internals

Well getting internals done so I can start increasing my boost safetly...once internals are done, then would like to introduce e85 and push the motor without worrying

 

[hlfbkd420]

Mine cross right around 6800

Thats why I am asking.. TQ and HP are related and should cross at 5,250RPM. No matter what gear you dyno in. Unless there is some weird scaling going on in your graph.

Roush Stage 2. 2019 GT. Factory Roush tune.

Run 2 is in 6th gear and the tires were slipping on the rollers. Runs 1 & 3 are in 7th.

 

[DmanDmythDlegend]

Happy to share the logs if anyone wants to see if they have any additional insite

 

[engineermike]

Horsepower and torque in ftlb always are equal at 5252 rpm. In his graph power and torque are scaled differently.

 

[engineermike]

Happy to share the logs if anyone wants to see if they have any additional insite

I would like to see them. What is the format of the data?

 

[DmanDmythDlegend]

I would like to see them. What is the format of the data?

They open in excel on my computer but have .csv

 

[Nawsad123]

Horsepower and torque in ftlb always are equal at 5252 rpm. In his graph power and torque are scaled differently.

Is my graph then still truly representative of the numbers and is just a scaling issue? Wondering if I should be concerned

 

[Nawsad123]

Is my graph then still truly representative of the numbers and is just a scaling issue? Wondering if I should be concerned

Ah I dont think I should be. Just realized the scaling isnt 1:1. What do ya think?

 

[hlfbkd420]

Is my graph then still truly representative of the numbers and is just a scaling issue? Wondering if I should be concerned

You shouldn't be concerned but the RPM is off for either the TQ or HP in your graph and no one knows what it is.... Contact the dyno and ask them them to give you a 1:1 graph.

 

[80FoxCoupe]

You shouldn't be concerned but the RPM is off for either the TQ or HP in your graph and no one knows what it is.... Contact the dyno and ask them them to give you a 1:1 graph.

Please elaborate.

 

[hlfbkd420]

Please elaborate.

Am I wrong? Why would the graph not cross at 5252 other than a scaling issue? I would assume HP is the number the graph is showing correctly per the RPM.

Educate me.

Most things that are scaled, show the scale factor for all elements. I don't see this in the OP or Nawsad's graphs.

 

[MKL_DS]

Am I wrong? Why would the graph not cross at 5252 other than a scaling issue? I would assume HP is the number the graph is showing correctly per the RPM.

Educate me.

Most things that are scaled, show the scale factor for all elements. I don't see this in the OP or Nawsad's graphs.

As engineerMike stated, the graph is simply scaled differently for horsepower and torque. Look at the left and right sides of the graph. I will never understand why shops publish dyno graphs like this, I hate looking at them.

More concerning is the loss of clean lines up top. It doesn’t seem happy at high rpm.

 

[80FoxCoupe]

Am I wrong? Why would the graph not cross at 5252 other than a scaling issue? I would assume HP is the number the graph is showing correctly per the RPM.

Educate me.

Most things that are scaled, show the scale factor for all elements. I don't see this in the OP or Nawsad's graphs.

You statement didnt make any sense. The rpm is fine, hp and tq read fine. Just scaled differently. No biggie.

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