iaknown might want to comment on testing things with the big turbo wastegate fully open?
I did a little more tweaking and it's actually turning out to be pretty easy to "shape" the boost curve. Attached are 3 configurations showing a slow progression of moving the high boost location lower in the rpm band, and it's still eliminating the big spike. The latest data (#2 setting) is going into higher rpm regions where the MAF is starting to saturate, so the android Torque app is showing more roll off in boost than the analog gauge is showing. But the analog gauge is showing the rolling off as well. So far this setup is demonstrating very good control characteristics across the full rpm range.
NOTE: The link back on post 43 was broken, so I fixed that. It now correctly shows the video of the analog gauge for the pull the android Torque app logged.
__________________
2011 335d 11.68 @ 125.71 mph 1/4 mile NHRA certified track
Ram Cummins with lots-o-mods
Last edited by TDIwyse; 01-11-2015 at 07:30 PM..
|