I have seen this before. I feel as though if it was truly a good effective product, you'd hear of more people using it. Seems to me it could potentially have some negative side effects :think: Quick spool and a 4 port solenoid is pretty damn effective though. A while back Vit posted a graph showing a 1200 rpm improvement in spool time on a GTX3076, the improvements are even better on larger non-ball bearing turbos.