1/4/2024 0 Comments Duramax turbo flutterThe turbine wheel has an exducer diameter of 65mm. This turbo has a compressor wheel that is 37mm in diameter and an inducer that measures 88mm. What Size Turbo is on a Stock Lb7 Duramax?Ī stock LB7 Duramax comes equipped with a Garrett GT3788VA turbocharger. Installation of one of these devices takes about 1-2 hours depending on your level of mechanical ability but well worth it if you want that turbo whistle without having to worry about readjusting anything down the road. These devices fool your truck into thinking that there is less boost pressure than there actually is which causes your wastegate valve to remain open longer and therefore allowing more exhaust gases through which gives your turbocharger that signature “whistle” sound. This involves installing an aftermarket wastegate controller such as those offered by Banks Power or BD Diesel Performance. If method one didn’t work or if you want something a little more permanent, then method two is for you. Now start up your truck and see if there’s any difference in sound coming from your turbocharger! This indicates that the wastegate valve is now fully open.Īt this point, re-tighten down the 13mm nut and give it a good tug to make sure it’s secure. With this tab released, you can now pull out on the actuator rod until you hear a clicking noise. Once the nut is loose, you will need to use a small flathead screwdriver to pry up on the tab that locks it in place. Next, take a 13mm wrench and loosen, but do not remove, the nut that holds this rod in place. This is the rod that connects the wastegate valve to the turbocharger. The first method is relatively simple and only requires a few tools that you likely already have in your garage.įirst, locate the wastegate actuator rod on the passenger side of the engine bay. One of the most common questions we get here at Diesel Ops is “How do I make my Duramax turbo whistle?” While there are a few different ways that you can go about doing this, we’re going to focus on the two most popular methods. The LB7 Wastegate Mod is a simple and effective way to improve the performance of your Duramax diesel engine.Ĭredit: How Do I Make My Duramax Turbo Whistle? This mod allows for more control over boost pressure, and can help to prevent turbocharger damage. The LB7 Wastegate Mod is a modification to the stock wastegate on the Duramax diesel engine. Take the vehicle out for a test drive and listen for any unusual sounds or performance issues Lb7 Wastegate Mod.Tune the engine for boost and ensure that all systems are functioning properly.Mount the turbocharger in the engine bay and connect all of the required hoses and wiring.Purchase a turbocharger that is compatible with your LB7 engine.Ultimately, it may take some trial and error to find what works best for your particular setup. Others suggest adjusting the wastegate so that less exhaust gas is able to escape, which can lead to increased compressor speed and boost pressure. Some people advocate using a smaller turbocharger to increase air flow and create more pressure in the system. There is no one definitive way to make a LB7 turbo flutter.
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