JMO
Just a question, but once we get a turbo that will hold 9/9, won't the head gasket be next?. The mean effective pressure in the combustion chamber is so high once fueled past 5/5 there is a ton of undue stress on head bolts, cylinder packs, crankshaft, and basically the rest of the powertrain. We should not expect TSTs box to be used for daily drivers past 4/4, should we? They have really come out with a good product, but it's surely use at your own risk.