All stock short block and stock cam. See sig for mods.

In 1st, 2nd and 3rd gears when gently accelarating or maintaing mid-rang RPM's I can feel this noticable surging with the engine. Its like a very mild bucking back and forth.

The engine makes no unusal sounds and the gauges dont do anything wierd when this happens. In fact the engine runs very very strong.

Ignition is all new except for the opti. Problem is super annoying.
Any ideas?

 

look and see if any wires are melted/ or start it an night and watch for a light show under the hood, sounds like ignition

 

Check you intake system between the MAF and TB for leaks.