my 89 dx just converted to mpfi and finished it up today. i bought a "converted" harness off ebay i say converted cause it was like a 1/3 done. i know you have switch the tps i dint know if the jackass who sold me the harness already swapped the wires. if your cruising at like 1500 2000 rpm and downshift and mash on it it falls on its face stalls out and wont run until you let off . if you roll into the throttle its fine though. i know i can just switch em around and see if its better but its about bed time and figured i would ask. btw no vaccum leaks.