Edge Stage 2 Kits. Air Filter Performance Kit. Stage 2 Kits. Edge – CHEVY/GMC 01-04 6.6L STAGE 2 PERFORMANCE KIT (Evolution CTS2/JAMMER CAI/Ec/Ccsb no/cat converter Jammer Exhaust). |2001-2004 Chevrolet Silverado 2500 HD,|2001-2004 GMC Sierra 2500 HD. Edge produces modules, programmers, and monitors for all major vehicle manufacturers 1996 and newer under the following brands: Juice, Attitude, Evolution, Insight, EZ, and Comp. ?Since its inception, Edge has been known for the power its modules and programmers produce. However, what sets the company apart from its competitors is the unmatched user control and unique style featured in every product. Edge?s ability to display multiple engine parameters ? and to provide associated safety features for those parameters on its stylish in-cab monitors ? has revolutionized the industry. Edge endeavors to produce the highest quality products on the market and to deliver them with superior customer and technical support.