A few years ago, eBay was the place to go for dollar-store turbochargers. It still is, with plenty of bargain performance parts, but the cheapest turbo kits we found came from another website ...

The compounds we’re installing center around a BorgWarner S475 atmospheric turbo with a 1.15 housing, feeding a high-pressure S364.5 SX-E with a 73mm turbine.