12.38@110.87.afr is 13.0,new opti,4000 stall vig that only goes 3600 on datalog.this is 3rd conv.all 3 flash 400 lower than they say.i think engine is down on power only goes 1.71 60ft (not spinning)therefore no power to flash conv correctly. .mods in sig.new icm,2 sets msd wires,autolite 104,4l60e built,tuned,new 255lph pump holds 43 psi,crosses at 6500rpm,shifts at 6300 rpm

 

cylinders pump 205-210,leak 3percent on worst.lpp headers,mufflex 4"exhaust