Dynojet vs Dyno Dynamics
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
-Chris
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.
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.
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
1036AP2
California - Southern California S2000 Owners
14
Jun 19, 2006 04:07 PM








