i used to have a '98 itr swap in my civic (then i wrecked it ) and right before i wrecked it, it drove weird, would randomly feel like it was misfiring or would bog down under full throttle.. ran richer than usual too. then i would unplug the map and it would run fine outside of higher, richer idle? any clues. and it only ran crazy during the summer? maybe just the heat? it only did it on and off, never really consistent

 

Possibly the fuel filter? Could be a number of things to do with the swap. Most people in here have Integras attached to their ITR motors so you may get some grief. Or cats.

 

i have the same problem and ive replaced my fuel filter, check your wires for arching and check the spark plug clearance gaping

 

its not the swap, my car ran perfect for a year and a half, best running itr i've ever seen, put down 170 bone stock with ls throttle body, and p28 ecu.... 185 with i/h/e, no ps.... not the swap. i did think it might be electrical, a ground or something, should have tested with an ohm meter before but i was just curious if anyone had the same problem and resolved it.. thanks tho