Here's the datalog that Eugen provided me this morning:
Running up the gears at WOT (he has a 6AT):
Partial throttle single gear:
He was dissatisfied with the brief ~0.5-0.75psi boost spike that occurred after shifting in the first graph (at ~66 second timestamp). I explained that this is normal and will always be the case for a number of reason (valve timing changes during upshift, small turbos, automatic throttle closure, etc,.)
In the second graph, he was dissatisfied with the
partial-throttle boost behavior, primarily the way the boost ramped up to 13psi by 3000rpm, from 7-8psi at 2300rpm. And then how it ramped back down to 8-9psi above that. I explained that turbos are inherently nonlinear devices and that we can't expect to make a constant boost pressure at a constant throttle angle, as revs increase. Especially when the throttle you induce at the pedal
does not equal the amount of throttle opening at the engine (in throttle-by-wire engines). Not to mention the fact that the turbo is a positive feedback device that relies on exhaust energy for motivation. And that exhaust energy will depend on a the pumping efficiency of an engine which differs at different engine speeds.
This is the data that was provided to me. This is how I interpreted it. Eugen did not agree with my conclusion. He informed me that he was going to sell his PROcede and that we did not share the same expectations. That's basically the gist of it. More details will be revealed once/if the actual email exchange between us gets posted up. But I think this should shed some light on the matters at hand. Not nearly as fun as some of the speculation topics. But still interesting from a technical standpoint at least.
Regards,
shiv
PS. For those who don't know how to read the PROcede datalog, here's a quick overview:
X/horizontal axis is time in seconds (s).
Y/vertical axis is logging variable. In the first graph, it is rpm. In the second, it is boost (psi). In the third, it is fuel correction. And so on.
The only two graphs worth looking at here (for the sake of boost control) are the top two (RPM and Boost). Boost target with the v2.0.2 beta map is 11-15psi depending on RPM and gear. The goal with this version of the beta map was to avoid any excessive boost spiking (once the ecu is fully adapted).