It is a very cool piece of kit, but you loose the VW thermostat in the prosess. That first plunger directs oil to the cooler when the oil is hot.
The perfect set up for using this one would in my opinion be: oil pump > filter > external thermostat > oil cooler > CSP fitting... and loose the stock oilcooler.
I guess they made it for those who use Porsche cooling primarily
Hello JHU
it is the setup we also recommend
but
with our adapter you can NOT use the original oil cooler
original VW thermostat is removed
that is what we state
if any info needed, just let me know