christ0pher

OK I GOT A 94 CIVIC EX COUPE IT HAS A JDM D15B VTEC SWAP ON A P28 ECU WITH A 5 SPEED D16Y8 S40 TRANNY THERE ARE NO CELS AT ALL IT RUNS GREAT BUT NO MATTER IF I GENTLY PRESS THE THROTTLE OR GIVE IT FULL THROTTLE AT 4100 RPMS IT FALLS ON ITS FACE IT SEEMS IT I HAVE IT HALF THROTTLE RITE BEFORE 4100 RPMS (LIKE EASING INTO VTEC) VTEC WILL ENGAGE AND IT PULLS HARD BUT HITS REV LIMIT AT 6000 RPMS AND I KNOW IT SHOULD ATLEAST GO TO 7200RPM IF IM IN NEUTRAL AND JUST REV THE CAR IT WILL ONLY REV TO 4000 RPMS AND BOUNCES AT 4000 RPMS PLEASE HELP!!! I INCLUDED PICS OF SWAP AND ENGINE AND TRANNY CODE ALSO A PIC OF THE CAR BUT I KNOW THATS NOT RELEVANT TO MY ISSUE BUT ITS A CLEAN CAR AND I WANT TO FIX IT SO IT WILL LAST ME AWHILE SO PLEASE HELP IM GOIN CRAZY

Former User

Please turn the caps lock button on your keyboard off.

Is the P28 ECU a proper match for your engine?

Does the CEL work?

Is the ignition timing set to spec?

SolScifen

is it stock ecu or chipped? cause it sounds like you have 2 step if its boucing at 4000. if it is it might have a set rev limiter at 6000.

DavisC22

Yeah first off I'd check if there was a CEL, and if it was the correct ecu for the car. If they are possibly try another distributor.