[trebuchet03]

So this doesn't really help as I'm not a diesel, but it does add a twist....

When calibrated, my SG has been very close to accurate - the reason it'd be off (in my opinion) is that the fill up doesn't go into as fine a resolution as the fuel pump (so round off error). A few months ago, I was really stressed out - and went through about 4 or 5 tanks driving pretty terribly as far as ecomodder driving goes - but the SG was still dead to nuts precise as before (which was near to accurate). I always used the same gas station, same pump, faced the car in the same direction, filled up the same way every time...

But I'm a gasser... and here's the twist! I have NO CLUE how load is calculated... It's a MKIV Jetta 2.0 - but load isn't what I expect. If I keep constant throttle while accelerating, load goes up. If I floor it at low speeds, load doesn't change much, and goes up with speed.... Just goofy... Not exactly related, but just throwing it out there that calculations seem to vary from car computer to car computer....