What exactly did u get re-wired??
Sounds like a CAS issue to me..
Check firing order is correct, on injectors and plugs.. also that you are triggering at the right position, not 180 degrees out(if you've had the dizzy out and moved the engine).. have you checked that you are getting fuel out the injectors.. not something simple like a blocked fuel filter??
Edit: sorry i didn't see thr RB26 part..
so don't worry about the dizzy part.. lol..
Check that the coils are firing in the correct order