3 Attachment(s)
2015 F150 Ecoboost, can not get higher than stock boost
I worked with this truck for a while, and read all of the threads related to this issue (as it seems a couple people have it sorted, but a lot are having the same concern.) I tried two tunes, and tried them both on the dyno as well as the street. Surprisingly the tune that had the least amount of changes actually produced the most power. I will post both tunes, in hopes that someone can help me get past this limit of boost. It seems to me as something is missing in the tune file. The PCM has desired TIP, but I can find no table/chart that associates anything int he file with TIP. No airflow=tip no torque=tip nothing. There has to be something that the PCM is using to calculate a desired TIP.
That said I am using version 3.4 so maybe that is the issue.
The first tune which actually has very minor changes produced 355rwhp 395rwtq at 14psi boost and drove amazingly well and very responsive.
This tune is labeled CUSTOM2 The log file I attached is from this tune as well and is from the dyno. I noticed that some pulls it would hit "insuficient fuel" for torque airflow limit. I found that it would hit this on the stock tune as well. I never saw a drop in fuel pressure. No changes ever seems to consistently change it from randomly hitting this limit.