You can take the slack up one of two ways.
You can either run a one more tooth on the sprocket or you can get a larger diameter tensioner roller. I ran into this with my last car.
The chain was super stretched and then when I put a new one on, it was either way too tight or way too loose. I just went with a larger roller.
I'm not running a turbo. Mine is naturally aspirated and runs pretty damn good. Maybe one of these days I'll throw a turbo on, but I'm pretty happy with it now.
Here is the tensioner on my car now....