The blow through meters can be mounted on the boost side of a supercharger/turbo system, whereas the std. meters must be mounted before-hand in a boosted application.
The Univer Pro-M is claimed to be a more efficient/accurate meter... I haven't any first-hand experienc with that unit.
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RLS Racing!
93 LX
9.20 @ 147mph
03 Mach 1
12.39 @ 116mph
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