i just out my car back to stock a few weeks ago and didnt have a p72 ecu to use. so instead i used a p75 ecu for awhile until i got a p72. well tonight i got 1 and now my car feels slower and sluggish. when i had the p75 in the car it felt quick in acceleration but with no vtec.

 

did you reset it?
...take the neg. terminal off the battery, leave it off for 5-10 minutes...than replace it, turn the car on and let it idle for 7-10 minutes. See if that makes a difference

 

10-15 minutes???? damn dats a long time. u only need to keep it off for like 10-15 SECONDS. u can also remove the 7.5 amp "back up" from the under hood fuse box. and i dont think that will solve the problem cuz when u remove the ECU wires from u r basically kill n power to it, therefore resetting the ECU. i think u might have gotton a bad ecu. any cels?

 

no cels, i dont think the ecu is bad cuz VTEC still works
any more suggestions?