You can go above 230 even on the standard torque with the Orion, you just can’t do it with the Navistar software, bill makes tunes designed for the hardware in your engine. The non HT isn’t weak it’s just not as stout for heavy fueling at low RPM.
If you have the HT version, the pistons and turbo are designed to provide more power at lower RPM, I’ve seen the 530 governed at 2400 but the 466s always seem to go 2500-2600 even the HT. That or the crappy Navistar tach is wrong.
I highly recommend the Orion. Bill can set you up with tunes that fit your engine. The engine part number on the valve cover will tell you if it’s standard or HT.
Like I tell everyone who is going to jump into the realm of tuning install an EGT gauge and a digital dash of some sort like bluefire is a huge help as well where you can watch boost, engine load factor etc.
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