And i laugh every time I see that
is that engine still even running? Of course they never seem to report back on any failures...
What happens when you deliver too much fuel? In diesels, particularly at lower loads, is that fuel builds up on the cylinder walls and washes down past the rings to dilute the engine oil. This can lead to things like crankcase explosions, and it interferes with how the rings are lubricated Increasing cylinder wear. This is why diesels are happier at higher op temps. The same thing can happen with gas engines. That adjustment increases fuel delivery across the entire spectrum. What was it again, 1-2 turns or 3-4?
cutting the line to the wastegate actuator removes its ability to regulate pressure, and the turbo will run at its peak pressure. But how much actual air volume does that add? How does the governor know how far to move the rack as the peak pressure it now sees has no corresponding rack point because it was never intended to ever see it…
for best efficiency you want the right amount of fuel mixed with the volume of air, so it combusts completely and doesn't condense on the cylinders, or so that it doesn't continue to burn into the exhaust stroke and out into the exhaust and cook the valves guide seals and turbo..
Cat spent literally millions of dollars building and testing this series of mechanically governed engines, developing multiple governor configurations for many customers/markets That would survive long hours of use.
if you think you can do better than cat in your yard with a turn here and a crimp there, knock yourself out, its your wallet… but I think you may find the experience is ultimately less than satisfying… having tuned and more importantly FAILED to properly tune a few power systems over the years, until I see the dyno and egt plots and as I get older the longevity proof(because I would rather drive them than have to keep fixing them), they are literally blowing smoke…
it surely doesn't make sense to me to take the risk when there are cat tested and proven parts that can get you to a higher tune…
YMMV, good luck…