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      11-18-2012, 09:44 PM   #1
E93blackdct
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ESS VT2-575 dyno result question

Hi everyone , my name is Andy , I just install ess vt2-575 supercharger on my 08 m3 conv dct transmission and everything else is stock , today I just dyno with superflow dyno ,the result come out very nice , I did 2 run all at 4 gear , they both read out at 517-520whp & 356-357wtq with 7 psi boost , temp at 40 degree F , but this supercharger kit should run about 6psi boost , I think this number is higher than I expect come out from this kit , please advice me if this number is possible or is accuracy . Thank you
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      11-18-2012, 10:25 PM   #2
eternallx
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Cold dense air makes more power and boost so yeah... just harder to put to the ground with street tires
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      11-19-2012, 03:42 AM   #3
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I thought ESS 575 (now 585) ran less boost - should be running 6psi.
http://www.esstuning.com/products/E9...er-System.html
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      11-19-2012, 09:40 AM   #4
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Quote:
Originally Posted by Superfly_M3 View Post
I thought ESS 575 (now 585) ran less boost - should be running 6psi.
http://www.esstuning.com/products/E9...er-System.html
When designing a supercharger system a formula is used of the crank pulley, and blower pulley etc that will approximate how much boost the supercharger unit will make spinning at that RPM. Based on sea level and also air temperature will determine the density of ambient air, slightly affecting how much boost pressure the S/C will make.

Right now in the colder months your car will make a bit more boost, and feel a lot snappier and quicker compared to the summer months.

Going ~1-2psi over or under will not jeopardize the reliability of your kit as your ECU will adjust for the denser air.
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      11-19-2012, 10:49 AM   #5
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Quote:
Originally Posted by E93blackdct View Post
Hi everyone , my name is Andy , I just install ess vt2-575 supercharger on my 08 m3 conv dct transmission and everything else is stock , today I just dyno with superflow dyno ,the result come out very nice , I did 2 run all at 4 gear , they both read out at 517-520whp & 356-357wtq with 7 psi boost , temp at 40 degree F , but this supercharger kit should run about 6psi boost , I think this number is higher than I expect come out from this kit , please advice me if this number is possible or is accuracy . Thank you
When ambient air temps are low the car will make a little more power, this is normal.
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      11-19-2012, 11:02 AM   #6
E93blackdct
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Thanks you everyone , now I can feel the result about right , especially thanks to Roman at ESS process my order very fast and helpfully with all my concern. I love the supercharger , it drive very smooth like OEM but not until you demand , just like they said . Thanks ESS for great performance .
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      11-19-2012, 12:00 PM   #7
E93blackdct
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Yes, I love it Phillip , what a difference with the kits on. Thanks
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