Piston is proud to be part of LEWIS. The same commitment to our clients, talented team and focus on results. Now, on a global ... scale. LEWIS Piston is a full service digital agency based in downtown San Diego. Piston builds and tracks brand relationships that span all media, all channels, and all marketing capabilities including SEO, PPC/SEM, shopping campaigns, media planning and buying, analytics and creative and branding services. LEWIS Piston is the winner of the 2014, 2015 & 2016 iMedia Small Agency of the Year Award, 2015 & 2016 Landy Search Marketing Awards, 2014 & 2015 San Diego Advertising Association Best of Show Award, and 5 National American Advertising Federation Awards. read more