So I have been slowly learning how to tune the ecoboost after learning the GM side of things. I have started playing around with my brother in-laws Focus ST. I have bought the Tuning School book for mustangs, and while a lot of the information relates to the ecoboost, there is plenty that doesn't.
Biggest questions I have are...
1) What controls Boost? Or what combination of things control it.
Thing I really noticed that changed from staying at 18.5 psi (touching 19 for a split second) was the MAP gross engine torque table. Changing the values from 300 lb ft to 350 bumped up the boost to 20.5 psi. Which is great, I was wanting to get there at a slower pace and work up to it as a final boost (20-21 psi).
Max tq.jpgtq1.JPG
2) How can you control the throttle body better? I understand that it's best to use it to help control boost faster, but my train of thought is, instead of closing the thottle to 30%, let the wastegate do more and only close the throttle to somewhere closer to 60% maybe. I'm thinking if the throttle closes less, it will react quicker because it has less to move. But maybe I'm wrong about this. Is the wastgate maxed out at ~0.85 on my log? Can you increase it to for the point of of throttle closure?
3) What is the true final output for spark? I'm logging a few different PIDS but can't figure out what is the final spark.
That's the questions I have to start. Thanks.
Nate Focus ST 1st tune plus 1 rev 1.hpt
Plus 1 short.hpl