Using the 2004.5 - 2010 Duramax Screamer Turbo is straightforward. First, make sure your vehicle is a 2004.5 - 2010 GM with a 6.6L Duramax engine (LLY/LBZ/LMM). If you have a 2004.5 - 2005 LLY, you'll need to install the 771864 - 0001 Adapter Cable. This turbo works great with our custom tuning options, so just let us know what you need. As for maintenance, keep an eye on the boost pressure and EGTs. If you notice any unusual changes, it might be time to check the turbo. The turbo comes with a 1 - year warranty, so if there are any issues within that time, contact us. Also, remember there's a refundable core charge. When it comes to installation, click on the provided link for detailed instructions. And enjoy the increased power and efficiency this turbo brings to your vehicle!