I had my tune real close and now I go way rich at WOT and can only make 9psi vs 13 before.

http://www.mediafire.com/?sharekey=c...4e75f6e8ebb871

 

I didnt look at the file, but based off what you said and I assume your using PE vs RPM to increase fuel then your running rich because fuel was set for 13psi, and now your only at 9psi and the fuel is still set for 13psi so it's rich.. that's the problem with running PE vs RPM is it's adding fuel based off RPM not actual airflow. This is all assuming a bunch of stuff but that's what happens when the PCM isnt detecting actual Boost.

 

What would be the prefered way to tune for boost and not use PE vs RPM? Now if only I can find why I am not making 13psi, then my tune should come back online, until the outside temp changes drastically.

 

Without running a boost referencing system (2 bar, 3 bar, etc) then your limited in what you can do since anything over 100kpa is unknown boost your entering the "unknown" area anytime you have 1+psi, basically timing and fuel have to be set for full WOT Boost, anything less than WOT is going to be overfueled and undertimed (in your case with less PSI then it was tuned for) unless you have something to compensate such as an FMU or some type of add on computer to help with boost, or a full out $3000 aftermarket system.

I personally stuck a 2 bar sensor in place of the 1bar and adjusted all the tables to compensate since I couldnt figure another way around the stock PCM limitations and the FMU setups werent reliable and no way am I spending $3000 on software that our stock PCM's cant run, fustrating.

Around 6psi you dont need much other then PE vs RPM, anything over that usually u will end up wanting more control.