PURE VOLT  is the most complete RFI filtering system on the market.  It covers the broadest range of Frequency's and filters out  95 - 100% of the most common  forms of RFI in todays high tech race cars.  It has been track tested and proven to be effective by some of the Best Racers in the world.  RFI is one of the most common problems in Drag racing and also one of the hardest to find.  It is odorless and invisible but the effects it has can be extremely costly and  appear at the wrong times.  
   What is
RFI Radio Frequency Interference.   Here is a short definition.
JBSDragracing.com
Electromagnetic radiation which is emitted by electrical circuits carrying rapidly changing signals, as a by-product of their normal operation, and which causes unwanted signals (interference or noise) to be induced in other circuits.
What you don't know about RFI can hurt you!   RFI can affect almost any device on your race car.  If another racer has a Magneto, Solid core ignition wires, Holes drilled in his distributor cap, or some other means of putting out large amounts of RFI, your cars performance can be altered dramatically without your knowledge. Sometimes it is done on purpose, and sometimes it happens inadvertenly.  Either way, it effects you.
   If you ever have unexplained inconsistency in your performance, this could be your problem.