Testimonials-
http://www.duramaxforum.com/forum/07-5-2010-lmm-performance-parts-discussion/143963-sdp-sinister-egr-delete.html
http://www.duramaxforum.com/forum/07-5-2010-lmm-performance-parts-discussion/141947-industrial-injection-twins.html
http://www.duramaxforum.com/forum/07-5-2010-lmm-performance-parts-discussion/129704-egr-delete-pipe-came-today.html