My car is missing really bad down low. It's fine past half throttle, and i have everything up top. But cruising between 2 and 3000 at constant throttle it'll miss really bad then take off and run fine, then miss really bad, then take off. What the hell is wrong? Any help would be great. I replaced the tps (not the problem) and changed the plugs (not the problem) Thanks again. I think i'm gonna try wires now and see what happens.

 

screw the opti and buy a delteq.

It will fix any ignition issues that you have.