ok i have a question i have a 90 honda crx hf with a jdm b16a.

im wanting to go to OBD1 ecu i now have OBD0 but im wanting all my sensors to work like knock sensors and such i have herd that p28 does not support knock sensor but the P72 does support all sensors on my engine is this true and is there a way to program a p28 to support the knock sensor. i feel that if Honda put the sensor there it should be used it was designed for it.

also what all will i need to do the swap succesfully in a few hours???

will i need a obd1 engine wiring harness or can i use my 90 hf crx one.
what is a good conversion harness???? other then rywire.

also do i need to switch injectors i have read that i dont have to switch injectors or the distributor as long as u make some sore of adapter please let me kno what you guys think. also what ecu u recomend
thanks


Fidanza 7.5 pound fly wheel
6 puck kevlar/ ceramic clutch disc stock pressure plate
Skunk2 intake manifold
DC Sport 4-2-1 ceramic headers
2.5 full exhaust
AEM cold air intake
MSD SS coil with 8.8mm MSD plug wires
NGK Iraduim plugs

quarter mile time 14.33 spinning badly off the line and threw second on kumho street tires.

 

bump i know lots of you guys have did this please help me out thanks

 

well on that note you will have to get a obd1 b16 ecu if you want to use all your sensors w/o codes. the p72 is gonna throw an IAB code and p28 isnt gonna read knock. i understand that some people are dead set on the way they want things done but i would highly recomend disabling the knock sensor, even bad gas can cause it. one day mine picked up a knock code so i tried 2 new sensors and another ecu and it didnt fix it. and it does make a slight difference in your performance when that code comes up. so i am using a tuned p28 and loving it.

oh and i am new to this site....so whats goin on everyone?

 

obd 1 injectors are NOT a must unless you wanna do a resistor box delete. and you HAVE to go with obd1 distributor. obd0 distributor will not work with obd1 ecu. as for the jumper harness there are several good ones i have an sve in mine. you use the factory crx engine harness you just gotta modify a little bit. it is a pretty simple conversion if you have everything need at hand.

jumper harness
obd1 distributor (gsr or b16)
4 wire o2 sensor
obd0-obd1 distributor plug adapter (or cut some from and eg and splice into your harness)
if you are slightly mechanically and electronically inclined you got this. it took me about 2 hours and bsing

 

what ecu is the OBD1 b16 ecu??

 

p 30

 

That is the correct ecu for a obd-1 B16. But, there is also an obd-1 PR3, which is also made for the B16. I don't know about emissions where you live, if you don't have any, you can get away with a JDM P30. The JDM ECU doesn't look for a knock sensor. I know the USDM P30 is programed for the knock sensor, because I have one.

 

ok i have herd mixed stoires on the knock sensor u need it u dont need it i mean how important is it figured sence honda put it there its needed sence its obdo im lookin at a hondata s200 with every option they let it have and doing the p28 do u guys think it would be a good setup

 

Well you could run the p30 obd1 del sol b16a2 computer.
You'll need the ecu jumper,distributor,obd1 oxygen sensor!

yes, the knock sensor will prevent engine damage caused by knock! If its there then keep it.
The jdm b16a's do have the knock sensor and my obd0 jdm ecu does look for it!




Modified by alscrx at 11:11 PM 11/11/2008

 

im not trying to objective here guys but as i said some people know how they want things done ex: keeping all sensors. i agree that the knock sensor can prevent engine damage BUT only to a certain extent. when it picks up a knock it doesnt kill the car instead it retards the timing. so if it is a serious knock chances are you gotta go through it anyway. and if it is minor such as a ping due to too much advance on you timing (yes a knock sensor can but does not always pick this up) it will just **** you off. if you have any plans of boosting or spraying in the future. when you get tuned its probably gonna be disabled anyway.

I still say chipped p28

 

with the hondata with all options i can pretty much do anything me and my friend were discussing why do u need to change distributors to a OBD1 ecu when all your doing is making a conversion harness for it to plug up to the obd0 harness kinda doesn't make sence to me can anyone explain that? oh yea i bought the hondatas s200 with all options now i have to get ecu and conversion harness. still trying to figure out WHY i need a obd1 distributor when im going to convert the harness to obd0 on it

 

does the obd1 distributor need to be from a b series or can it be a obd1 from a d series?

 

what distributor and years can i get does it need to be a td-44 or what?

 

well you can try but i am almost 110% sure that there is no d series distributor that will work on it. hell you can even use an obd2 b series distributor i dont know why but there is something different that the ecu reads and the obd0 will not work. i have already tried because i was asking the same question that you are. so get yourself an obd1 or 2 your preference b series vtec dizzy and save a few failed attempts to make that old one work. and you dont convert the plugs on the distributor you change them on the engine harness so that you dont have to f--k with the distributor plugs everytime you change it. or you can just buy the 50 dollar distributor jumper plugs so there is no cutting soldering etc.. etc..

 

and yes td44 is the one you want

 

what distributor and years can i get does it need to be a td-44 or what?

 

what distributor and years can i get does it need to be a td-44 or what?

 

i don't know why this thing keeps repeating this so please don't mind or get mad with the same thing getting re posted

 

if you do not use thet hf wiring harness i will buy it off you but you will prob. need it