i have dual dynamic seals on my turbo, it has survived lots of beating, lots of track time, and a lot a lot of dyno tuning.



machine the housing is hard, the tight clearence makes a HUGE difference. why not buy the hifi compressor housing too?

I agree. I think machining the housing will be too difficult to get right. Therefore I'll just buy a new 60-1 hi-fi housing. I just have to get a few bills out of the way first.



Whats with these dual-dynamic seals? I haven't heard of them.

its pretty popular options nowadays. and its not expensive hehe.