Here's a quick chart of RPM vs. Boost directly from Torque. The boost varies according to throttle position on my N54, it ramps up extremely fast, and is pegged until with 200 rpms of redline. In this chart, my '08 135 (n54) with Dinan Stg 2, is just cruising along the highway in 2nd gear (the cluster of low boost dots, and then accelerate with WOT until hitting redline
the drop-off visible in the graph is quite noticeable while driving, then I back off the throttle.
I've searched for a couple of hours on alot of forums looking for proper boost configuration on an N54, but no one has a definitive answer. So I assume that the boost is not correct. bmw codes are not known, but, I figure it's still relative for my car. If ever my Dinan gets turned off by a service technician, my chart would be different.
