i would look at this page Geo: Hi-Spec Starlets not listed but i bet its equivalent, i was looking at them myself they are the ones i told you baout over the road from me
you need an FCD (fuel cut defender) or BCC (boost cut controller), the BCC's are better the FCD's trick your car the BCC's actually remove the cut - GReddy or Jam do the best BCC or there's the HKS FCD