Edelbrock Twin-Force Stage 2-3 Turbo System Upgrade Kit For 17-20 Ford F150/Raptor Truck 3.5L HO V6 EcoBoost #158338 will upgrade your Edelbrock Twin-Force Stage 2 Turbo System to a Stage 3 Turbo System. If you have a Stage 2 Turbo System, purchasing the Stage 2-3 Turbo System Upgrade Kit Part #158338 that will fully complete your system with the Stage 3 electronic fuel pump booster and matching calibration unlocking the max potential of your truck. Edelbrock’s engineers collaborated with Garrett on the design of all new turbos for the 3.5L EcoBoost trucks. These new direct bolt-in turbos incorporate the latest in turbocharger technology, offering a 54% increase in airflow over the factory turbos. A 60mm billet compressor wheel produces great improvements in compressor efficiency and flow. The 50mm Inconel turbine wheel and larger .45 A/R stainless steel turbine housing result in a 52% increase in turbine flow. The 2.75” compressor inlets are 38% larger than the factory turbos complementing Edelbrock’s high flow turbo inlet piping. When combined with Edelbrock’s larger Intercooler, air inlet tubes and high flow air filter, these turbochargers offer huge increases in power potential for this application.