They still sell them. However, although the arguments will wage on forever, they have been proven time and time again to be pure snake oil. Between the cost of the caps, and the sheer amount of farads you need to actually make any difference whatsoever, you would be better off to add a battery.
Anyone who says a cap helped with headlights dimming (which seemed to be the main marketing strategy) is disillusioned. Its just snake oil, pure and simple.
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P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals
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