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Got my Z4 M Coupe dyno'd today

Old Aug 7, 2010 | 08:38 AM
  #11  
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Good results, however it seems your results are on a standard Correction Factor whereas the dyno chart posted earlier, SAE Correction Factor is used.

Therefore, your car should read 5 to 10% less with SAE CF!
 
Old Aug 7, 2010 | 09:57 AM
  #12  
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Originally Posted by cupcake of bahrain
Good results, however it seems your results are on a standard Correction Factor whereas the dyno chart posted earlier, SAE Correction Factor is used.

Therefore, your car should read 5 to 10% less with SAE CF!
In English please?
 
Old Aug 7, 2010 | 05:08 PM
  #13  
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Originally Posted by MC321
In English please?
you just lost 30hp
 
Old Aug 7, 2010 | 11:53 PM
  #14  
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Old Aug 8, 2010 | 05:51 AM
  #15  
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Yup

On the road today, in real life.. you are -30hp from that result!
 
Old Aug 8, 2010 | 08:47 AM
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Looks like less power than stock then..

Thing I noticed is that my chart goes up to 6k RPM when I actually reached 7.5k.. oh well, will do a run when the weather gets better and see..
 
Old Aug 8, 2010 | 09:11 AM
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Nothing to do with the weather! They have simulated cold weather for you which is not true! SAE Correction Factor takes into account outside air temperature, altitude and humidity, and corrects the graph for you so you get an accurate representation of your output!

Also, they need to look into their Dyno calibration and RPM reading methods! I hope they didn't use the "lighter socket" method on your car to read RPM!

If they did, they should research more into your car's throttle actuation technology! Your car isn't a chevy or a honda!
 
Old Aug 8, 2010 | 12:32 PM
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Originally Posted by cupcake of bahrain
Nothing to do with the weather! They have simulated cold weather for you which is not true! SAE Correction Factor takes into account outside air temperature, altitude and humidity, and corrects the graph for you so you get an accurate representation of your output!

Also, they need to look into their Dyno calibration and RPM reading methods! I hope they didn't use the "lighter socket" method on your car to read RPM!

If they did, they should research more into your car's throttle actuation technology! Your car isn't a chevy or a honda!
The middle part I agree with since they used that method and the RPM reading was way off..

Maybe I should visit another dyno to do a comparison.. what do you recommend? and not the one I went to earlier because that gave me 209whp..
 
Old Aug 9, 2010 | 04:00 AM
  #19  
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Bahrain dyno, stick to dynojets... salah's mainline dyno is different! I'm sure the guys at M&M can explain to you the differences in dynomometers!
 
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