Stay tuned, going to the dealer tomorrow.

 

I have seen the same problem in Mondo1s Lightning. We checked everything.. We then replaced the fuel line to a -8 feed and a -6 return with high-flow rail fittings etc etc and the problem went away. His fuel pumps could not maintain the volume of fuel his engine required. The a/f was also lowered by doing this and added power was found all around the powerband. I have since developed this into a kit form. I get to do 2 more of these this weekend. Peace