I've replaced 02's, MAP, changed TPS, EGR, new plugs & wires, ignition coil, checked my fuel pressure (seems fine 35-42psi at all times), replaced fuel filter....yet my car still seems to bog or hesitate when i try to accelerate really quickly from a dead stop out of 1st gear. this continues till about 2k rpm or so, then picks up and runs normal throughout the rest of the power range. I've checked for leaks throughout the intake system including in the back of the manifold and don't seem to have any. my icm & coil have been spaced away from the head, so i don't think it could be a heat soak issue, although the bog does seem to be more pronounced after normal operating temp is reached. water pump is new so no leaks on the opti, however, i'm not sure if the opti has ever been replaced since before I bought the car. what do you all think...change icm first, then opti? is there a way to test either one?

 

Go try to tutorial at Shoebox's website.

http://shbox.com/1/4th_gen_tech2.html#opti_test

A schematic is here:

http://shbox.com/1/95_ign_system_schematic.jpg

You'll nail it down there.

Good luck,
Ivan