What car are you driving?
If it's an S3 then you don't need an aftermarket intercooler until you get above 400bhp,and for that you are going to need low compression pistons,stronger rods and a few other things incl a bigger turbo.
Mine has been on the rolling road lottery and turns out about 360+bhp...it feels about right in comparison with other cars I've had with similar or higher outputs.
If you're using a standard clutch,that will chuck in the towel fairly rapidly over 310bhp/300+lbs,and its the torque that kills it.
Like many others here,I have the Sachs clutch.
I seriously wouldn't be too keen on the FMIC unless you go above 400bhp,and I would still put my money on a single large uprated intercooler,than an add-on piggy-backed onto the existing one....if most of us get to 360bhp+ without it,you don't need it,as this is about the ragged edge of what the stock turbo is capable of flowing in gas terms.