I run 12 lbs of boost on my 2004 ford lighting with long tube headers, granateli mass air senor,flow master mufflers, accufad throttle body, had it dyno at romar last week,400 hp and414 lb's of torgue at rear wheels; is that good or not, my biablos sport tune with max fuel added,i had a a-f of 13-69 have to get custom tune
i also have the 5.6L but with a whipple supercharger...... its runing on 13 lbs of boost.... but i´m only doing 405hp at 4750rpm........ something is going wrong??
it has shorty headers
3" exhaust tubes
deltachip.... diablo sport
generally speaking the air fuel mixture should be ajusted toward the rich side, a slightly rich condition means more powder and actually helps cool the combustion not less powder, like silver streak said,
My 04 makes 412HP and 502 Ft/Lb of torque at 12 pounds of boost. Your HP seems fine, but your torque is a little low. I agree that 13.6 A/F is uncomfortably lean. Get your chip re-burned for a 11.8 to 12.3 A/F and your truck will be happier. In my opinion long tubes out perform shorties
I bought the truck last summer and have yet to get to the track. The truck is a daily driver (22,000 miles in the last 11 months) and will never see much track time. Anyway, now that I have the mods I wanted in place, I’ll probably hit the local 1/8 mile a couple of times for grins. The closest ¼ mile is over two hours away and just not worth the drive to me.