ejfagala

Ok I recently installed a new 383 and have had a strange miss since day one. The car misses between 3900-4000 only. I can hold the car at 3800 with no miss and at 4100 with no miss but if I stick it at 3900-4000 it will just sit there and miss. It will do it under load or in neutral and at partial throttle or WOT. Here is what I have done so far. Replaced wires and plugs (No effect), swaped ECM and Delteq box with no effect, had the car tuned from every where from way lean to pig rich with no effect. The FP holds rock steady through out the run and every thing looks great on Data Master including all sensor info. I am thinking it is either the Opti (I dont use the cap/Rotor portion) or the coil pack for the Delteq system. I am at a compleate loss on this and could use some help. We pulled about 15 runs on the Dyno and it was like a watch it would hick up at 3900 and be right as rain by 4100. Take a look at my dyno graph and you will see where it looks as if someone took and erased 3600 (The scale and my tach do not agree)
Help anyone please
http://www.boomspeed.com/ejfagala/DynoRun11_20_04.JPG