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  1. 11-16 LML Duramax Powertrain
    Hey everybody 2011 3500hd I have a very loud and obnoxious noise coming from the firewall area at the turbo. Starts around 1200rpm and almost changes frequencies when I’m driving. Even when the cruise is set, it’ll change from low to high back to low. Like a squeal/whistle. I thought for sure...
  2. 01-04.5 LB7 Duramax Powertrain
    Hey Guys I know About the PPE Boost Valve But Im Seeing Alot Of "Pros&Cons" I Found This 1 Seems Very Practical DIY Manual Boost Controller - Honda, Acura Tech Website, tutorials, tuning and HOW-TO's. Drag racing, street racing, road racing - C-speedracing.com What Would Be The Max Boost...
  3. General Discussion
    about a month ago i bought an 09 sierra duramax with about 1015km on it. it was used by Vanoc during the olympics in Vancouver and later put up for sale by a dealership. i got a good discount on what seemed to be a barely used truck. as soon as i got it and drove it home about 10 blocks away...
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