hmmmm 9004 as a design are inferior to a h4, so tho you might get "more"
(assume brighter defined here) light, the 9004 and the US lens puts a serious
damper on the quality of output, hi or low voltage..... The US lamp design
will not get better with the addition of thehi output 9004, unless your
definition is just brighter.... Save the hassle get a hella catalog and put
the relay to a bettr use......
The hi output 9004 is a quick fix, relatively cheap, and easy to install...
But the real question, is it better? Me thinks (and I tried the 9004
conversion myself) not.......