So I am new to the Honda game I recently bought a 00 Honda Civic ex with a D16y5 swap running a P28 ecu.. Wit that being said my V-tec doesn't kick in and when it dose it's between 5200-5500 why is that?? I drove my brother car same year same model except he has a y8 and he also runs a P28 ecu!! Some ONE OLEAEE HELP ME OUT.. Thanks

 

You have a HX trim engine. Its economy vtec, not a performance oriented vtec.



Basically you bought a car swapped with a slower/gayer motor than stock


EDIT: You need a P2N I believe, not a P28.

 

d16y5 has no vtec, it has vtec-e and engages around 2800-3k rpms. if the p28 isn't chipped than find the p2n ecu.

 

You could also use my p06 ecu and have pharable or another service 'chip' this ecu to work like a p2n.

 

A custom map will be need as well as changing the vtec changeover, leaning out cruising spds..etc..etc..

Not to mention if you need to pass emissions, which hasn't been specified if the OP needs to or not, is something that should be considered.

 

It is my understanding that any ecu could be changed to any other ECU, and VTEC or VTEC-e can be added to a non-vtec ecu.

And since the engine is factory specification, there should be no problem using say a p06 ecu thats be transformed into a p2n.