In my 93 I dont think I am getting its full potential. When I accelerate and keep the pedal in the same position, it will accelerate, and then suddently, lets say when I pass 20 mph it will accelerate a little bit more and this gained acceleration power doesn't seem to be lost until I am at a full stop again (or mayby when I get really slow again, <20MPH), because when I accelerate back up again this behavor is repeated after I surpass a certain speed.

Everything else with the engine seems to be fine, I dont think the idle speed varies at all and it hums along at 650 rpm. In terms of a tune-up I did pretty much everything which it entails (o2, pcv, fuel filter, plugs/wires, seafoamed intake). I have done that TPS mod but that was a while ago and it hasn't behaved this way immediately after I did this mod. What are your ideas and what should I be looking at? Im suspecting my EGR valve since its pretty damn dirty and I didn't really clean it well after I put it back in the weekend before (ran out of TB cleaner).

Forgot to add that coils tested to be between 5.9-5.95. Tested about 10 mins after engine was running.

Anyone have any musings? The symptoms are getting worse.