Horrible Hunting On Tuned Pfc Some Times, And Injector Problems

[NateR31]

Alrightly, usualy this would only happen for like 5seconds at 7am when its dead cold, and the car would work it out and be fine.. Just befor i went for a short trip and when stoped it hunted like hell, 800-1200rpm with the timing going all over the place 2-40deg, it took a while to work it out, gave it afew revs, what could be the reason of this? Also, my duty cycle for some reason is comming close to %100 but befor it wouldnt pass %85..

(usualy mods, pfc, fmic, exhaust, 12psi, tuned for 200rwkw) what could cause this problem? Any help appreciated..

Nate

[paulr33]

check afm plug. something in the car has changed and the FC is trying to compensate around it. failing that, get the tune saved perform DATA INIT and idle self learn. i had this problem about 8 months (ish) ago and self learn idle fixed it spot on. then just copy the tune data back