ESS 545 Performance Software / Supercharger
10-22-2009, 02:23 PM
#51
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Originally Posted by tbal' post='1038316' date='Oct 22 2009, 11:34 AM
How come you keep skipping all the pricing and numbers questions 
regardless, i still want see and hear this...
10-22-2009, 02:26 PM
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Originally Posted by EuroCarFan' post='1038216' date='Oct 22 2009, 11:22 AM
Read my post above about how different dynos have different readings and don't jump to any conclusions.
As an example, an M5 on a Dyno Dynamics read around 380-390whp yet it'll read around 420-430whp on a Dynojet.
As an example, an M5 on a Dyno Dynamics read around 380-390whp yet it'll read around 420-430whp on a Dynojet.
10-22-2009, 02:36 PM
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My Ride: E60 M5, F85 X5M
Originally Posted by E60714' post='1038513' date='Oct 22 2009, 03:26 PM
OK, then which is the accurate one? And why do different synod do this? If I tell someone my car dynos at 320 and tests it on his andit say 170...there's going to be problems.
Here's a good write up on dynamometer testing by Steve Dinan: http://www.dinancars.com/bmw/technial-info...dern-bmw-engine
10-22-2009, 04:44 PM
#54
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Originally Posted by tbal' post='1038316' date='Oct 22 2009, 01:34 PM
How come you keep skipping all the pricing and numbers questions
10-22-2009, 07:11 PM
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I the compression is really high on these cars. Its going to take lots of tricky tuning and meth injection and filling up with 110 just to keep the heads attached. I have been down the road of high compression supercharged motors before.
10-22-2009, 09:55 PM
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Originally Posted by tbal' post='1038316' date='Oct 22 2009, 02:34 PM
How come you keep skipping all the pricing and numbers questions
10-22-2009, 10:03 PM
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Originally Posted by EuroCarFan' post='1038518' date='Oct 22 2009, 06:36 PM
They're basically all accurate. You just can't compare across dynos. It's sorta like using different scales to weigh yourself and getting different numbers. The correct way to use a dyno is to use the same one (same machine/location, same operator, and hopefully under the same conditions if possible) to measure your car's power before and after your mods to see if you had any gains or losses. If you start with say a Dynojet for example that normally reads pretty high and get some baseline numbers and then add some mods and jump to a different shop that uses a Dyno Dynamics, you'll probably see low numbers but that doesn't mean your mods lost power.
Here's a good write up on dynamometer testing by Steve Dinan: http://www.dinancars.com/bmw/technial-info...dern-bmw-engine
Here's a good write up on dynamometer testing by Steve Dinan: http://www.dinancars.com/bmw/technial-info...dern-bmw-engine
Correct
Dynos when used correctly are designed to compare delta gains under identical conditions. The actual HP figure means very little as dynos and dyno testing methods vary greatly. What you want to look at is how much power was gained and was the testing conditions the same for both. This test was done on the same day , same temp, running the same fuel. This car was down about 20 hp from its factory rating mostly due to the fact that it was almost 100 deg when we tested it. If we were to run this test in colder weather say 70 deg the car would make another 20 hp on both the baseline and software tuned runs but the delta gains would remain the same.
Also the whp number you see in blue is uncorrected. With correction it would be about 260-270 whp.
