Quote:
Originally Posted by JPuehl
You're post is perfect timing as 3 weekends ago I disconnected my JB4 and started self tuning and am currently at the point of working on getting boost close to target then will work on PID. I have an early '12 135i N55. I've 0'd the PID table and am tuning the WGDC before PID table to get boost where it should be, as well as a couple other table like pressure ratio tables and the load ceiling table. I'd be interested in hearing the strategy you used to get you where you are today.
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I didn't find any benefit to zero'ing out PIDs to dial in boost.
Assuming it's a stock turbo car, easiest way to get things sorted is to set load ceiling high and use wgdc to control boost target. After about 4500 rpm you really can't go wrong since the stock turbo is so small, but be careful with duty cycle at lower rpm because you can exceed the stock tmap fairly easily and it's hard on the engine to make that much cylinder pressure and low end torque.
Are you using commanded or standard wgdc tables?