Im going to the dyno tomorrow and I need to add a little fuel to the top end. Im running HP tuners, with a nelson tune. Im running a MAFS Nelson tune. The MAFS maxes out at 4500RPM. Tune runns perfict up to 6200RPM with 13PSI. Now at 15psi Im gettin on the lean side up top. Alen built the tune with set fuel curve to keep adding fuel vs RPM after the MAFS maxes out. I just need to know which tables these are, and where to adjust them. Thanks,J

 

I would adjust the PE table to be a little richer if that is what it needs, but it sounds like you are probably maxing out your fuel system...

What size injectors do you have and what fuel pump are you running.

 

68LB, with a 255 intank 2003 fuel lines. Duity cycle is 74%

 

I got it. Got the AFR to 11.2 injectors are @86% now. Even at 98% AFR is still 11.2. So I must need more pump.