are the ebay turbos on here good or something? i have never seen a fourm have a guy sell them on a fourm whats with that

 

For the sake of not offending the sponsors too much, let's just say that when it comes to turbochargers and related parts, you typically get what you pay for, both in terms of quality and vendor support.

IOW, some folks here have successfully used Chinese-built, eBay-sourced turbos in homebrew kits, but good luck trying to find a compressor map for one.