Sorry, that was a bit vague, with this ECU I can run two boost maps and switch between probably 12-14 (to be decided) and 8 (8 for wet weather) but thats not my point.
I want to work towards each target boost as listed BUT don't know what numbers to change in the tunerstudio software...to get away from wastegate controlled boost......my boost control settings say Open Loop and EBC map says 100 in every column...what the hell does that mean..?
I changed it to 85 as a test and had no change in boost levels.....
My hesitation durign the last race meeting has been described as overboost protection, how do I adjust that. I have found plenty of material about what it does but not how and where to adjust it...
So some of my research last night found this ifno in the MS2 PNP Gen 2 manual....
The MSPNP has an electronic boost control feature supporting open and closed loop boost control. Once you have wired this up, you can enable boost control in TunerStudio. In open loop mode, the boost control solenoid puts out a signal at a fixed duty cycle (that is, a percentage of time the solenoid is open) as a function of RPM and the throttle position sensor. This is a bit easier to tune and will generally keep the boost right where you set it, but can drift a psi or two with dramatic changes in air temperature and other variables. You'd be most likely to notice this if for instance you had tuned the car on a 80degF day for 15psi of boost, then drove it on the 32degF day. In that case you might see an extra pound or two of boost. Closed loop boost control is a bit more complicated to tune, but when properly setup allows the ECU target and correct to a specific boost pressure regardless of ambient air temps and other variables that come into play.
NOTE-- while many EBC valves could be used, we recommend using the EBC solenoid available from DIYAutoTune.com. This is the valve we have tested with, and have setup the base maps to support by default.
When running boost control, you'll set up the basic parameters for the valve under the Boost Control screen in the Advanced menu. For our EBC solenoid, we recommend a frequency of 19.5 Hz and a control interval of 20 ms. The boost control pin is always PA0. The Output Polarity setting is Normal. The duty cycles can be a little confusing at first glance: They refer to waste gate opening, not solenoid opening. Set fully closed to 100% duty cycle (this means an open valve applying maximum pressure to the waste gate) and fully open to 0% duty cycle (a closed valve will send no pressure to the waste gate).
this is the sort of info I am asking for help with....I know the source material title (MSPNP Gen2) may be inaccurate but the tunerstudio s/w used is the same so it is the same process/info for me as listed above right?
If that is the case, is there any way to know what the values are? or ballpark values I need for 10 psi or is this specific to each engine/turbo and relies purely on trial and error...?
I really want to move away from wastegate pressure (7psi) to 10 Psi but obviousley need to understand this all first.
Also, I don't see reference to PSI in tunerstudio am I best to start learning and working in KPA or does it not matter because perhaps tuner studio works in duty cycles only...?
Perhaps seeing someones duty cycle and what sort of boost it gets them would put this in perspective for me..?