For those that don't want to spend the money for Digi-Tails, just changing your (4) 1157 bulbs to LED is only $30 from Amazon and the lumens difference is measurable. See attached pic.
Digi-Tails doesn't publicize the lumens output of their lamps. So, other than they look and act cool, the output is unknown. The impression is they are LED so they must be brighter.
I played with LED's a few months ago. Probably spent more on various bulbs than Digi-tails cost. I tried different red and clear LED boards that will fit these housings, and different combinations of individual LED bulbs, multiple bulbs, etc. and all were better than incandescent 1157's, but none were better than the 1157 replacement LED bulbs with the reflector built in the tip.
The other thing with Digi-Tails is the circuit board reliability. You have to be sure that the lens and housing are well sealed against water/moisture that will attack the circuit board. And the heat factor with LED boards, they get hot. I hate spending this much money on aftermarket electronics that even the OEM's still have problems with.
When we're 500 miles from home I don't want a failure that I can't fix. With the 1157 LED bulbs, I just have to replace a bulb.
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