Yes, you can compound a VGT turbo. Compounding is simply running two turbos in parallel, where one turbo feeds the other and helps to reduce exhaust back pressure while providing more boost. This setup has become increasingly popular on diesel trucks due to its ability to provide extra power without sacrificing efficiency or reliability. By compounding your VGT turbocharger, you can increase horsepower and torque significantly while still maintaining the efficient operation of the original single-turbo setup. The key benefits of compounding include improved throttle response, lower exhaust temperatures, better fuel economy, reduced emissions levels and increased reliability. However, it’s important to note that compounding is not for everyone; if you are looking for a simple performance upgrade then a stock replacement may be more appropriate than going with a compounded system. Additionally it takes skill and experience to properly install this type of setup so having an experienced technician handle the job is highly recommended if you decide to go down this route!