i just bought a 5.1 (again third time now) and a hollowpoint bolt got rid of the l7 =( heres a guy on youtube installing it i found it helpful..
they also have instructions on there site
(trouble shooting at the bottom..)
o and this is also in the instructions... straight from site
What we tested-
Without QEV: 300fps @ 150psi, 26-30 dwell flashes on a stock Ion board (physical dwell of 21 to 23 ms).
With Clippard QEV: 300fps @ 150psi, 0-4 dwell flashes on a stock Ion board (physical dwell of 8 to 10 ms).
i found it odd people say they don't reccomend a qev but yet they have test results.. and how to install with and without..