4.10's + Stingers A/B = 6whp???
11-03-2008, 01:25 PM
#11
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Join Date: Sep 2007
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Yes and no. They way I have understood it, there is a correction factor that is standard. It accounts for the weather and such but other things such as gas (mentioned previous), break in of car, how hot or cold the car was, where the dyno was started at (it looked like the graphs started at different RPMs which may or may mean anything. But usually tuners start at the same RPM everytime. So I wonder if his dyno setting had been adjusted.).
If car makes 300 on day X, good day, cool air, car not really hot and then makes 294 or 306 and day X2 that had slightly different weather I wouldn't be concerned.
Even the correction factor is not the end all be all. The best way to gauge results from performance mods is at the track or same day dyno results.
The extreme example is on blown cars. Like the cars with large twin screw blowers and water intercoolers. Heat soak comes in after a few pulls and you will see actual results, SAE corrected, with 20-75 HP less. Again, this is extreme and someone else can probably explain it differently, but it's all a statiscal nothing. The car still makes the same power it did before it just needs to cool down.
Find out what "power under the curve is".
Go to the track. The Best fun you can have while not in bed IMO.
If car makes 300 on day X, good day, cool air, car not really hot and then makes 294 or 306 and day X2 that had slightly different weather I wouldn't be concerned.
Even the correction factor is not the end all be all. The best way to gauge results from performance mods is at the track or same day dyno results.
The extreme example is on blown cars. Like the cars with large twin screw blowers and water intercoolers. Heat soak comes in after a few pulls and you will see actual results, SAE corrected, with 20-75 HP less. Again, this is extreme and someone else can probably explain it differently, but it's all a statiscal nothing. The car still makes the same power it did before it just needs to cool down.
Find out what "power under the curve is".
Go to the track. The Best fun you can have while not in bed IMO.
11-03-2008, 04:20 PM
#12
6th Gear Member
11-03-2008, 04:36 PM
#13
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i think to get a more reliable test, you would have to make more than a couple runs on the dyno to get numbers that are consistent, maybe do some sort of standard deviation and throw out the highs and lows, then get a consistent average power, then compare numbers. but from this info you can say that adding gears and stingers gave you 6 rwhp and -1 tq. idk how else you can see it. we've all had runs on the dyno, and we know that you will get different numbers even tho the mods are the same. so we need more consistency and a larger pool of info. but there is a point where the change is so minute that we can throw out the numbers and say that they are negligable. i would say this is the case.
11-03-2008, 10:47 PM
#15
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