Originally Posted by
eficalibrator
1) All current samples of SME-DVD-1 data disc now ship with the latest file (rev3). It's a very small change, but I wanted it to be right on the money so I went ahead and included it a while ago. If you have the older version, don't sweat it as your data works out to be damn close anyway.
2) SD80's are a bitch to tune, even with the right data. You'll notice that the min PW spec from Siemens/Continental/FRPP is pretty large. They simply aren't that happy trying to consistently deliver the very small fuel masses required for stoich idle at low airflow. The data in my DVD simply models the "best fit" to this very non-linear behavior, but the part-to-part variation is even greater. I have seen only minimal success with the SD80s, even with perfect data from that exact set. I've had much better results using the SD60's, which are good to ~1000hp at 4bar fuel pressure. If you really need 80's, I'd seriously look at the Injector Dynamics ID850s instead. Their low end behavior is significantly more predictable.