I have found with Dyno Dynamics there is a huge learning curve in how to work the equipment. My problem with it is that the settings can be easily changed so its hard to know what the numbers mean.

Dyno jet may be a crude simple POS but at lest you know what the numbers mean when compared to another dyno jet.

Al

 

Well the hp/tq are on different scales, that is why they don't cross at 5252.

Still doesn't explain how torque is close to the same on both charts but the "dynojet" chart shows 60 more whp but the torque is the same.

That DD needs to be set-up correctly.

 

Probably should read this, might give a bit of understanding to why dynojet numbers are so inflated.

Dyno Jet - Fudge

 

The new machinery is a little hard getting used to as far as calibration goes. Setting the tach pulse up is a bit tedious so that may be why the hp/tq does not cross at 5252.

 

I believe there is a mode which a Dyno Dynamics can be run in in which all data is displayed on the sheet so that you know exactly what settings the run took place with.

 

Well, i dont think when the settings were changed to give me an "estimate" of what a dynojet would read ALL of the settings were changed. It was at my request due to the "heartbreak" readings of the dyno. Dont quote me on this, but i think it was something to do with the inertia setting changing the load on the vehicle. Like i said I requested it, just curious if i was at where others were with the same mods.

 

I figured it out pretty easily. The numbers on the graph as far as power and torque goes did not equal the same on both sides. I am posting this new graph to show the change. On this new graph, which is the same from the first, i changed the axis numbers to make them equal on both sides from 0-300. Nothing else was changed on the graphs, so now hp/tq crosses at 5252 rpm. Sorry for the confusion. I will post the graph up later.

 

On graph number 1, even though it reads flywheel power on the left side axis, the mode was not in "shootout mode." It will display whp even though it sais flywheel horsepower. Torque never changed on the two graphs because we let it stay on wtq, not flywheel torque which will give a dynojet number. Simply on graph number 2, the table on the bottom right hand corner is in shootout mode and will display the flywheel horsepower(dynojet) numbers. There seems to be a "slight" glitch in the software, we are working out the bugs so we can give everyone our most accurate number with no false information. Sorry if i confused you guys once again.

 

Ok now that makes sense.

 

Hey guys, just want to show you the graph fixed and the hp/tq crosses at 5252 rpm. Like i said earlier, the tables on both sides were not set in even intervals. The only thing that was changed were the numbers both power and torque. The range goes from 0-300 and now it is right on.

 

Looks like the Tach signal was weak or getting corrupted by EMI

 

Was your car run in snow mode?

Good to see DD graphs. Does explain the US and UK WHP debate!

 

Ted, Isn't that DYNO4MANCE is using Dyno Dynamics too???

Is there something wrong with this particlular dyno?(the one above 1st page)
I am just hoping to get the right tune .....

 

Thanks for clearing that up Pete. I printed out the NEW/IMPROVED graph.

 

Are you talking about the long dip at the end of the run after 7000rpm? This dyno requires quite a few things to be done at once . The numbers are spot on, that is what counts. If you want me to explain that too i have no problem.