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Old 11-24-2012, 11:56 PM   #439
Scooby Guru
Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
2002 WRX - 750WHP
9.5s @ 150mph


I decided to do some boost vs. power comparisons tonight (just for fun). First I started with a few logs with the MBC backed out all the way. The car was hitting about 20psi and was basically flat to redline. Pulling them up in Virtual Dyno showed nice consistent results!

Because that looked good, I decided to turn the MBC up halfway to where it normally is at. I did a couple logs and it peaked close to 24psi, with a little taper down to around 22psi. Then to finish it off I turned the MBC up to my normal spot and it was just barely touching 27psi and then tapering down close to 24-25psi.

Looking at the boost and torque (for the 24psi and 27psi graphs especially) you can see that I probably did have a slight uphill for run 1 and slight downhill for run 2 of each set. This slightly affected spool and peak torque. But overall the results are very consistent.

And here is the plot with just one run from each boost setting. Solid, incremental gains with each change in boost. This is a nice, easy way to see how increasing the boost can really bump up the power (assuming the turbo is still able to flow enough air). It is great that Brad's software makes it so easy to do a comparison like this!
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