just had dsm 450cc injectors installed, now my car will idle nice for a bit then my afr's jump to around 17.5 and the engine stumbles for a sec then returns to 14.8 and idles smooth once again. this same cycle just keeps going.

stock o2 disabled in boost. seems to idle evenly with the iacv unplugged (but very low).

any ideas?

runs nice at wot!