What is a Precision 483?? Borg Warner makes s400 turbos and Bullsye makes billet tct compressor wheels and race covers for them and sells them as their own. I'd say you have a Bullsye tct s483.you can throw that 480 over your stock charger and make good power still. i ran a 480 over my modded stock turbo with 45% overs and dual pump, made 800rwhp. since then im still running the same modded stock IHI but with 100% overs and a precision s483/96 t6 with billet TCT wheel and race cover. its hovering around the 1k mark now but this is not proven via dyno or track yet.
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