Using this Boost Lab TD05H - 20G turbocharger is a great way to enhance your Subaru's performance. First, make sure your vehicle is one of the compatible models, like the 2004 - 2018 Subaru STI with EJ257 engine. If you have a 02 - 07 WRX or 04 - 07 STI, you may need to do some modifications during installation. All the necessary gaskets and hardware are included, so it should be a relatively smooth process.
When it comes to fuel, the turbocharger is rated at 400hp on pump gas. But if you want more power, you can use race gas or E85. Some customers have even reached power in the low 500 range with these fuels.
As for maintenance, keep in mind that each turbocharger is VSR balanced and tested. It comes with a 1 - year/unlimited - mile warranty, so if there are any issues within this period, you're covered. Regularly check the turbocharger for any signs of wear or damage, especially the turbine housing and the bearings. If you notice anything unusual, it's best to get it checked out by a professional.