My brother is doing a h22 swap to his '95 prelude...the previous engine was the 2.3L non vtec. the new engine came out of an '01 prelude and is the h22 vtec. he has all of the wiring from the h22 except the ecu...and his car was wired from the factory to have a vtec.(according to what i read on superhonda). i went to superhonda and printed out some stuff on the swap, but still have a few questions.

1)does he need to change the ecu?
2)does he need to swap out the wiring harnesses on the engines?

**and if anyone has the piece of exhaust that bolts to the exhaust manifold let me know b/c he needs it. the bolt pattern on his exhaust doesnt match the exhaust manifold from the h22.

 

The H22A is a P13, while the H23 is a P14. Here is a usefull link to Honda ECU codes: http://www.superhonda.com/tech/honda_ecu_codes.html

It may run with the P14, but would it run well? I'm also in the process of doing an H22 swap, kind of a learn as you go deal.

 

keep the wiring in his car use all the obd1 stuff from the h23 need to find a obd1 h22 computer and wire in vtec

 

so just get a p13 ecu and 'wire in vtec' < what do u mean by that...b/c his car was wired for vtec according to what i read on superhonda.com (he has the 2 wires on the passenger side strut tower for the vtec)....

thanks for the help..

 

no his car was not wired for vtec. you need a p13 ecu and ad the wires into the harness for vtec. we can do it at my shop if you would like. give me a call. 317-4760 Redline Customs

 

where is Redline Customs?

 

I have a JDM P13 ecu that I could sell you, depending on your location. PM me if interested.