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Originally posted by Wasuchi
How much are those runs costing you?
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The posted rate is $54 for the setup and first run then $15/run ater that. Colvin only charged me for two runs even though we have the data from four.
They sent me the datasets via e-mail and a link to the Dynojet site where you download the data reader. You can dork around with it to your heart's content...displaying the info in various configurations (MPH, RPM, etc)
Here's the same data with RPM instead of MPH:
http://berryhillfarm.us/benz_stuff/Dyno/dynorevs.jpg
Quote:
wolf_walker
...you're not going to see a change made with the ALDA on something like that. It only starts at 40mph, all the difference I ever feel with adjusting the ALDA, and it is a very considerable difference, is on standing takeoff, sub-2000rpm, if not lower.
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That makes sense and explains why there wasn't a more noticeable difference after the ALDA adjustment (it's been a long time since I piddled with it).
FWIW, they only enable the datalogging after the car is in high gear and, the dyno won't actually log until the computer detects parity between engine rpm and roller rpm (no slipping). If the transmission shifts while logging, the dyno reads the inertial spike as false peak HP.
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82-300td
The dynojets are calibrated differently...
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Some of the difference can certainly be attributed to the weather. It was right at 80F and 50-60% RH...not exactly dense air. In fact, the tech asked me if I was really sure I wanted to run because the weather wasn't very good for it.
But, that said, I've ALWAYS felt like this car wasn't making the same HP as my other 300. Now I want to take Lilly over there and run her too!
Quote:
82-300td
How quickly did your boost top out? (What is your boost, BTW?)
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I forgot my boost gauge but, last time I checked, it was 9.5 PSI and it was opening the wastegate anywhere above about 2000-2100 rpm.
Quote:
82-300td
I see you didn't go past 3800 or so (71mph vs. 103mph). Did you not want to rev it any higher?
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We ran it to 4500rpm. In regular service, I never rev it past that point so I didn't see any reason to do it here either.
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