Originally Posted by agrazela
I just got a scantool, and I'm planning to screw around with intakes. Please elaborate on this...
Your scantool should have a flow rate value for the maf sensor. This will tell you how much air is coming into the engine. You'll need to record/log this and rpm at WOT.
For consistency, do pulls in the same gear, make sure your air intake temps, engine operating temps, etc. are in the same range and test one right after the other so the humidity is the same.
If you plot the maf flow rate vs time for both setups you can not only see which intake has higher peak flow but also which has more area under the curve.
You may just want to concentrate on the area 3k or so and above since you only below that rpm once in a race.
Note that different types of filters as well as how clean they are will effect the results.