I need to know how I can tell that the ECU i bought is actually a p28 ECU from a 92 civic EX/Si w/ vtec. I know what a OBDI ecu looks like, but how can i tell is has VTEC. It doesnt have the sticker on the side that indicates is a p28 or are all 92-95 ECU p28? I just want to make sure i didnt buy a CX/DX/other.

 

take some pics of the board

 

okay i just found out that its a p28 A01...does that mean VTEC??

 

hmmm...possibly the pinout is different for the two because obviously the p28 would have a couple extra wires for vtec and vtec oil pressure. I think you can find ecu pinouts on hondaswap.com

Also have someone who has a 92-95 Non VTEC ecu open there's up and take a close up picture, then you could compare that with yours. Again i would think that the p28 would have some extra modules/chips inside for the VTEC.

 

thanks alot for the info guys, i jsut got some GOOD info from some on HT.

for all your help.

 

If the sticker on the top of the connector says P28-A01, unless someone changed that sticker, then its a 5 speed SOHC Vtec ECU for a D16Z6 motor.

Anyone who might not know this, certain P05 and P06 ECUs (92-95 Civic CX and DX) can be converted rather cheaply for Vtec operation.