Desperation

Ok 71, I was hoping you wouldn't jump all over me for suggesting that...lol. I certainly meant no disrespect, and it sounds like you have done you due diligence. What I've found with some cars is the squirtor size is too small. What happens is that if you move the throttle slowly, you get a certain volume, then it stops, because the throttle stops openning. That's how things normally work. The problem comes with full throttle and a gdod traction car, with a lower stall speed (like street/strip deals). When you board the pedal and open the throttle to WOT, the accelerator pump start to pump the instant the lever moves. But it keeps going with a small squirtor. It keeps squirting until the pump's full volume is exhausted. Now, the first say 1/3 of the volume of fuel is probably enough to overcome the slow air speed when the throttle blades snap open. But as soon as the engine reaches say 2400rpm, the air speed (and signal strength) is back up, abnd drawing fuel. So you end up with a large rich spot in the fuel curve, only at WOT, and only until the accelerator pumps stops squirting. What I would suggest is this. Go up approximately 4 squirtor sizes. If you have 31s, go up to 35s. But thenreplace the pump cam with a smaller one. (notice how every cam EXCEPT the secondary cam for 4150s are all smaller than the factory ones?) So the accelerator pump will shoot slightly more fuel but for a much shorter time. The bigger holes allow more fuel out over less time. See if it still bogs. The MOST important thing right now is a constant tuning spot (like the track) and making one change at a time, and fully documneting where it starts from, and what you do. Then you can put it back shouldd things not chenge for the better. I think you have too much accelerator pump shot at WOT for that Demon. Remember...they like to be lean, and they are designed to have a much stronger signal at lower air speeds.