MAF doesnt really care, it just sees more or less air. It's up to the tuner to tell the ecu how much fuel/spark to give it for any MAF reading.might be a dumb question but how is the maf tuned when used as a blown through? just curious. its still same hz tables so what gives it a boost reference?
VE would be easier since it has the expanded table?
But a smaller pipe will generate higher readings so it will max things out prematurely, and bends or anything that will cause turbulence at the sensor can affect readings badly too.