newman
February 29, 2008, 12:40pm
19
Nikuk:
another valid point. Imagine part throttle flow, lol.
And I imagine that when yo come off the throttle, completly blocking the airflow infront of the turbo would not make for a happy turbo.
this is called PUMP CAVITATION
focusinprogress:
^ wow, i totally forgot to consider that. but the draw-through vs. blow through maf argument:
I have mine personally set up in blow through, but SCT actually recommends it in draw-through because it is easier to tune and delivers a smoother more driveable tune so they say. Its pretty rare to see blow through in the focus world…too many guys are afraid to tackle tuning it that way. partly why i have had so much trouble getting the tune where i want it.
the maf should read the same voltage on either side of the compressor, but depending on the proximity to the throttlebody, you can develop pressure waves traveling in the opposite direction of the airflow which will disrupt the reading.