What is the purpose of the oil in the supercharger unit? To reduce friction between the internal SC gears.
What would happen if one was able to further reduce the frictionr? The SC would spool up faster, and make more boost. And that's exactly what happened.
Or, let's go in the other direction - what if you were to increase the drag between the gears?
We went into this dyno session with hypotheses, and these were the results.
To call the results for boost bogus when we had TWO separate instruments measuring boost is rather bold on your part.
Nope.
Unless the belt slips there will be NO difference. Simple physics.
Lube doesn't cause the supercharger to spin faster...
with every rotation the supercharger put out x amount of air. the lube doesn't cause the supercharger to rotate faster. It doesn't change the drive ratio.
If the belt is slipping than there may be an effect if after the lube it doesn't slip. Slipping will occur with higher boost pressure. "more load"
I didn't say the rest of the data was bogus...
Just that the boost pressure doesn't look correct.
Later,
Don
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