crete10

i have a jdm b16a with a chipped out p28.. not sure what all has been done but i am told that the fuel curve was changed.... for higher redline or something like that ... anyway knock sensor wire was not connected and i cant find anything on p28 pinouts .... please help... not sure what to do..

B20Monster

i dont think the p28 ecu has a knock sensor. that could explain why there arent any pinouts for it.

crete10

then what do i do about my knock sensor wire? if so...

Newman

P28 ECUs don't have a knock sensor board in them. So you don't have to do anything with the wire.... leave it, love it, hate it, whatever but it's not going effect anything.

crete10

should i purchace a p30 ..... or just keep the p28 i hear that the p30 is alot better...

EVIL_AWD

Just keep the P28, it's a great ECU. Factory knock sensors suck anyway.

crete10

what other wires need to be hardwired as well on the p28 with a b16a

Katman

well why don't you give us some more info such as the year and model (CX/DX/Si/etc) of your car. This info is needed to further help you.

..and for the record, if you took the programmed eprom chip out of your P28 ecu and applied it to a P30 ecu, it would run exactly the same as it would on the P28 ecu (w/the chip on it). I duno why people keep thinking a genuine DOHC VTEC ecu, chipped, would run better than a P28 if using the same program (mugen for insance)....its the same damn hardware and programming!

Here's a simple analogy:
PS2 game system = OBD1 VTEC ECU (sohc or dohc)
PS2 game = OBD1 'race' program

you can use any PS2 game on any version/model PS2 game system.



[Modified by Katman, 2:08 PM 3/27/2003]

crete10

im basicly doing motor swap only my last head went out on the last eng and decided to just get a longblock..... but im not sure if the person put the last eng in right... so i have a 93 teg with a jdm b16a... and a chipped out ecu... i need to know what all i have to hardwire myself... like the vtech wires and any other ones that i may need as well.... i cant find anything on the p28 ecu no pinouts anywhere.. so im not sure what i need...

Katman

ok thanks..

here's all the info you need regarding wire up vtec for your 93 DA/integra:



...the knock sensor is optional to wire up, thing is if you ever use a stock genuine DOHC VTEC ecu, its going to look for the KS and will throw a check engine light if one isn't wired up....however vtec will still work.