ive got a 2002 duramax 2500HD with diablosport tuner set to 120 hp. a 4 inch exhaust with a 7 inch tip. little lift. cold air intake. k&n filter. dick cepek wheels with 285/75/16. what can i do to make my turbo whistle more?
from my quick research the answer may lay in your intake. i read that a Bill's Custom Intake http://www.billscustomintakes.com/ and a ported intake horn will do the job. otherwise a turbo upgrade to a S480 should do the job
Hey duramax02 i have a 2003 duramax and i put the billscustomintake bull horn on my turbo and the whislte and fuel economey came alive on my truck i am planning on getting the intake system he sells soon hope this helps
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