MBRP Armor Pro 4" x 30" T304 Stainless Steel Spiral Louver Muffler HYP-752500 The variable vane turbocharger design

The variable vane turbocharger design used in the 2006-up Duramax engines to reduce turbo lag and increase power can also help slow you down

Calibrated Power can get the power

7L powered trucks do

you'll gain 10% additional air flow and produce an extra 20 horsepower over the standard Boxer 58 turbo

We recommend this setup for trucks that are used primarily for towing and daily driving

MBRP Armor Pro 4" x 30" T304 Stainless Steel Spiral Louver Muffler HYP-752500 The variable vane turbocharger designIf you want your 4" exhaust to have a cool tone but without the excessive bark or drone, this muffler is for you. Featuring a 24" body (30" overall length) and a spiral louver core, it will deliver a great MBRP sound to your diesel. Get the best sounding muffler on the street today. Each muffler boasts a fully welded construction and is designed to take all of the abuse you can throw at it. This muffler is built from T304 stainless steel.