Dynamometer Results & Comparisons - Whats the difference......
07-30-2010, 11:24 AM
Between a street tune and a dyno tune? I saw a short thread on this a while ago, but it never really stated what the difference between the two was.
07-30-2010, 11:32 AM
One is datalogging normal driving conditions
dyno is for WOT pulls
You get better drivability from the street tuning. Its better to do your VE tables on a dyno to NOT go crazy fast on the street
07-30-2010, 12:05 PM
So the street tune is best for normal cruisin or occasional stop light wars correct?
07-30-2010, 12:17 PM
a good all around tune can be done on either but from my experience a street tune idles better with less cam buck at the lower rpm
07-30-2010, 03:36 PM
A good tuner always uses a combination of the two... Tune on the dyno, followed by street tuning. It is easier and safer to do WOT pulls in 1:1 gear on a dyno... and you get feedback on the power/torque it is making and what changes to the fuel/timing do to those readings. A wideband should be put into the exhaust ahead of the cats if you have them, and used to tune the fueling from idle to WOT. Sniffers in the tailpipe don't cut it for precise tuning. Drivability is then done on the street because rolling idle and coast down are more acurately done during actual driving. And a verification of the LTFT correction is done while driving as well.
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