Quote (FMX_89 @ Nov 5 2015 05:46am)
You must drive a powerstroke.
All spool and no go
Every one of them at work is set up like that
I could write a novel about how they are losing power doing that but I can break it down kinda simple.
All these shelf tooners make a new map for the vgt vanes (similar to fuel maps but less complicated - More of an if this -- than that type of coding) and when you look at a map for a shelf tooner its a re-map of the stock map with tighter values. It stays tight throughout the entire map rather than backing off at higher loads. When you run a VGT say 70% closed at WOT @ 3,000 RPM you can just about guess what the drive pressure is like. Over 9000. Anybody with half an understanding of how a turbo works can understand how high drive pressure effects boost on a vgt. Your drive pressure will reach a "max output" value and anything over that point is less efficient in making more boost on the cold side. A well ran map of the VGT vanes can add up to 4-5psi on the top end. Not to mention a much much lesser chance of watching your manifold pop out the fender or the head going through the hood.
Box toons are great for one thing. Running 30-60hp settings and getting rid of the emissions. Anything over that is really really inefficient power.