I finshed my swap last night it is a d16y7 out of a 00 civic lx in to 93 civic lx . It has a y8 manifold with d15b7 throttlebody and injectors with y7 fuel rail . Well the question is after I start it the rpms jump all the way to 6k with out pressing the throttle and I have to shut it off or it will redline , anybody know what this might be ?

 

ECU?

 

d15b7 ecu stock

 

someone at work told me probly big vacum leak

 

Throttle cable adjustment, if the throttle isn't open check for loose manifold bolts but that's pretty high even for a vacuum leak.