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Dynojet vs Dyno Dynamics

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Old Jun 15, 2006 | 09:04 PM
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Default Dynojet vs Dyno Dynamics

As far as dyno results differences, etc?
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Old Jun 16, 2006 | 10:32 PM
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I just dynod on a dyno dynamics ~295 Dyno Jet ~324
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Old Jun 16, 2006 | 11:55 PM
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dyno dynamics are similar in hp rating as the mustang dyno's - very low.
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Old Jun 17, 2006 | 06:28 PM
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thanks for the info
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Old Jun 17, 2006 | 06:38 PM
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Don't forget one equation. User control. Depending on the info put into the dyno you can get a high or low reading from any of them. I had a reading from a dyno jet that gave my car a 192hp number. Now comparing that to the track and the mph did not add up. So watch what they enter into it. It can give you a bogus number. If you want to compare friends have them dyno the same day you do.

-Chris
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Old Jun 17, 2006 | 08:33 PM
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Always have correction factor set to 0 for accurate readings. Nothing adjusted for humidity or temp to skew what the values really are.
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Old Jun 17, 2006 | 08:39 PM
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Dynos are tuning tools period and you should always go back to the same dyno to remove the possibility of the varability between dynos.

Mustang, DynoDynamics, and Dynapak dynos are all load based units that actually put the car under load (similar to how it would react driving on the street). The main difference being that you remove the wheels on a Dynapak rather than place the drive wheels between sets of small rollers. Dynojets are inertia based dynos where the drive wheels spin a large drum to calculate force. You can easily skew the results of a Dynojet from things such as tire pressure, strap down pressure, etc. The other three above take out a lot of these variables to help keep the results more consistent. These are not the only type of dynos either (there's Bosch and a bunch of other brands/types).

The way a dyno extrapolates hp/tq is different between all dynos (Mustang and DynoDynamics probably being the closest out of the bunch). So in other words, you CANNOT compare numbers from one dyno type to another (say Dynapak vs. Mustang, etc.).

Another thing to keep in mind is that just because Car 1 makes 215/140 with i/h/e and Car 2 makes 198/132 with the identical mods, that doesn't necessarily mean Car 2 is weak, broken, or that Car 1 is a superior built "Wednesday" car. How dynos are set-up, calibrated, run, etc. can have a large variation on the results.

Cliff notes: If you're going to mod your car, get a baseline done stock and go back to the same dyno whenever you install a power adding part. If the numbers go up, you're going in the right direction. Don't bother comparing your car to others because there's just to many factors to make it an accurate comparison.
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Old Jun 18, 2006 | 07:26 AM
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Dyno Dynamics is typically 13% lower number than the dynojet. I will be using the dyno dynamics for a baseline on the 25th and then using it to tune later on.
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