Bad dyno results...something wrong?
3/18/07, 12:54 PM
#21
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Its better to do the pull in 4th (direct drive) with less transmission losses.
If you were in third then the formula reads:
T = 1050 (27.2 / 2/ 12) / (3.55 x 1.32) = 253 ft-lbs
Note this is delivered torque. Engine torque will be maybe 15% higher considering driveline losses. Looks about right for a stocker.
If you were in third then the formula reads:
T = 1050 (27.2 / 2/ 12) / (3.55 x 1.32) = 253 ft-lbs
Note this is delivered torque. Engine torque will be maybe 15% higher considering driveline losses. Looks about right for a stocker.
3/19/07, 05:26 AM
#22
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Yesterday I went on the dyno to get my real results of my car after the mods installed, shown below in my signature.
The Result was 317 german DIN PS. Shouldn't it be more? I have the feeling the tune from steeda isn't as good as is should or could be.
What are your experiences after mods?
Flo
The Result was 317 german DIN PS. Shouldn't it be more? I have the feeling the tune from steeda isn't as good as is should or could be.
What are your experiences after mods?
Flo
The pull should be in 4th gear (ovrdrv off) and start a 3000rpm. At about 5200rpm you will see the torque converter unlock (indicated by a whoopty-ti-do on the graph). There are tunes available to prevent that from Bamachips and possibly a few others.
Wtih your mods you should be at about 285 +/- rwhp.
Make sure that the guy running the dyno has it set for SAE (not Standard) and that the altitude is set correctly.
There are Mustang Dyno's and Dyno-Jet Dyno's that I have used. The Mustang Dyno will give a lower result.
3/20/07, 07:11 AM
#23
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Whoo...i probably found ONE point...why my results are so bad...they are DIN PS not SAE PS...1 DIN PS is approx 1,15-1,2 SAE PS...so when I compare my results of 317 DIN PS to SAE PS there comes at least 365 SAE PS...now the result should be right....or what do you think?
Are the Power of 300 hp given from Ford the SAE or the DIN PS Power? I think it should be the SAE PS. right?
Are the Power of 300 hp given from Ford the SAE or the DIN PS Power? I think it should be the SAE PS. right?
3/22/07, 07:14 AM
#27
Legacy TMS Member
Always run your car on the dyno in a 1:1 gear ratio with the torque converter locked. You can't do this on an automatic without a special tune to keep in the 1:1 gear with the TC locked for the entire run. In a manual, shift into 4th gear for the run.
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