88 5.o lx conv running questions

[racerx0071]

Hey Guys.... I have a dilemma.... I have an 88 5.0 auto.... it runs ok but it seems like it cant get out of its own way.....

timing at 10 degree btdc
all is stock but when I advance it past the 10 it pings like crazy at higher R's...... but low end improves as i raise it up////

it is still speed density , will higher fuel pressure help the higher end ping....
Where do you guys find the timing on pretty stock mustangs to be where they run well....

I want more power but I want driveability to be good....

thanks

my email is racerx0071@yahoo.com

thanks

ray