On a totally different note why are you only trying to request around 15 psi? Bring it on hard to 20+ and then taper it off in the higher rpm to save the turbo. Get the TQ down and then try and keep up lol.
If you need to reduce fuel over the whole range, change in the injector constant. If you want to remove 3%, multiply the number by 3% and remove that from the value. The percentage can be found by looking at your long term fuel trims.I dropped the boost level to reduce engine load until I get a few other things in order. Perhaps this is not the best route, but to me it seemed like I was playing it safe. The base tune supplied seems to be awful and needs a lot of work; I guess that it is why it is called a base tune. My plan is to bring it back up to those boost levels.
Your option A sounds like the plan that I will use as I do like a strong boost curve.
As for the injector correction, it is still the same from the base map. All I have changed are the Power Enrichment and Full Load Lambda tables to richen up the fuelling. The gas here is terrible ("91" Octane is similar to 89).
My current table is as follows:
I have not familiar with this table, but I assume that I reduce the value to mitigate the fuel being taken out. Would you do a blanket map change (minus say 0.1 from the entire map as a start)?
Also, what would cause the injector time to be so high? It seems weird to be reaching a maximum on stock setup.
Thanks for the help! I am obviously new to this.