Just recently put a 01 gsr swap in my 98 ls, and it starts right up but idles rough, and when I step on it slowly it revs up but if I step to hard it bogs out and dies. No cel other than vtec and sec. O2 sensor. Was thinking the iacv? I took the one off of my LS but still the same. Could it maybe be the little o ring for the iacv it looked kinda flat. Anyhelp would help guys . Thanx in advance.

 

Ttt

 

ttt

 

Ttt

 

Check the map and tps plugs sometimes you can mix them up and have issues like that. Also check all the vac. hoses. but im gonna say it has to do with the cells you have. what harness are you using and why diddnt you wire up the vtec and o2 sensor?