[EricStaab]

Originally Posted by zfaylor

I do have to say that technically everything we do to ECMS for diesel performance purposes was already illegal in some way.

I'm not a tunner, so I do not know all laws. But I disagree. Changing the ECM for more power, or for fuel mileage in my opinion isn't illegal. What might be illegal is the results. Such as having an engine that doesn't meet emissions, or speeding ect. Most emission issues come from deleting mechanical parts anyway. For offroad/racing use there is no laws yet. But this is just a step toward it.