I want to to convert from obd 0 to 1 on a b16a in a 91 CRX si. I think I have everything right but I am ot sure about ecu or distributor.

If I get a p28 ecu will i have to get it chipped because it is for sohc and the rev limiter is lower?

Will any dohc distributor work or is one better than another?

Also can I run peek hold injectors or saturated does it matter?

I think this list is right

-conversion harness
-4 wire o2 sensor
-distributor from any dohc obd 1 engine ???
-and ecu p28 or p30 (92-95 ex/si civic) ???

 

Dont quote me on this as this is from memory:

P28 will need to be chipped for a dohc prog.
You should be able to reuse the injectors you have now because of the inj resistor box. All the other stuff like obd1 dist and 4 wire o2 sounds good.

 

Also can the distributor be OBD2 or do I have to have OBD 1?

 

I believe the plug styles are different for OBDII and OBDI distributors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 100whplusperliter &raquo;</TD></TR><TR><TD CLASS="quote">Also can the distributor be OBD2 or do I have to have OBD 1? </TD></TR></TABLE>
i believe you would have to use a obd1 disributor

 

you can use the OBD2 distributor, you just gotta match the sensors.

 

what about alt, and header? I thought obd1 uses a 4 o2 sensor header????

 

Just out of curiosity will upgrading from OBD0 to OBD1 net a power increase, or any performance benefit.

Sorry to hijack thread, I am just curious.

 

i'm doin a b16 obd0 to b16 obd1 upgrade now....i don't think you'll need a new header, just plug in the 4 wire 02 on the upper part of the exhaust manifold and fill up the hole of the other o2 sensor

 

why switch to OBD1 in the first place? To post the question agian, is this going to give more power? If the OBD1 ecu is better than the OBD0, then why not just chip the OBD0 ecu? I'm running a 2nd gen B16a, and i coverted to OBD0. It's running fine... Plus, i figure changing the OBD0 harness to OBD1 is hella difficult and a is a big headache.

 

OBDI is more upgradeable + supported. IMO OBD0 is like the carb'd fuel injection system. It really isn't 'intelligent' at all. If it's working for you, don't bother changing, though.

 

obd1...i just wanna pass smog legally

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CLICC916 &raquo;</TD></TR><TR><TD CLASS="quote">obd1...i just wanna pass smog legally</TD></TR></TABLE>

&lt;---is glad he lives in FL

 

Now to my Questions

-what cars had a dohc obd 1 distributor ?

 

GSR 92-95

Del Sol Dohc Vtec OBD1 TD44-U!!

if you need one I have one for sale!!!

 

Thanks everyone

 

U can use the obd2 dizzy no problem. Since you will be swapping the plugs on the distributor anyway it makes no difference wich one you use. I have a 2000 civic Si on mine. they're also newer so less wear on them hopefully.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx_b16a2 &raquo;</TD></TR><TR><TD CLASS="quote">why switch to OBD1 in the first place? To post the question agian, is this going to give more power? If the OBD1 ecu is better than the OBD0, then why not just chip the OBD0 ecu? I'm running a 2nd gen B16a, and i coverted to OBD0. It's running fine... Plus, i figure changing the OBD0 harness to OBD1 is hella difficult and a is a big headache. </TD></TR></TABLE>

For those of us with cam and valvetrain upgrades on our b16's we well know that OBD0 dizzy SUCK 9k rpms and above! I've already burned threw 2 dizzies, 2 coil packs and 2 ignitors!.

Plus if you upgrade your header it's easier having a system that only uses 1 O2 sensor.

Also, it helps your car pass emissions and where-as it may not benefit performance it most likely will benefit MPG/Smog.

&lt;- who will probably convert to OBD1 next spring.

 

when in dought do a search

 

bump...i have a 89 hatch and i have to do the obd0-obd1 rewire my dizzy,injectors, get a p28 rechipped, and get the adapter for the sohc 92-95 vti motor i am putting in,, does this sound right?

 

[QUOTE=rice_classic]For those of us with cam and valvetrain upgrades on our b16's we well know that OBD0 dizzy SUCK 9k rpms and above! I've already burned threw 2 dizzies, 2 coil packs and 2 ignitors!.[QUOTE]
/\ not me, but glad to know if i ever find that dang pot of gold.

 

O.K. you guys are making this seem alot harder then it really is when converting from obd0 to obd 1 when it comes to B16 YES you get more power. obd 0 B16's have about 160HP and OBD1 and up have 170 HP. The extra 10 HP is supposely from the OBD1 set-up but some say it's cause the obd1 and up have slightly bigger cams. Right now I have a OBD1 B16 in my Civic HB right now. Also YOU MUST USE OBD 1 injectors on obd 1 motor. OBD o and OBD 1 are two completely different style injectors ( pre- obd is peak hold and obd1 + is saturated )

But I converted to OBD 0 to eas the swap but I am converting to OBD 1 ths winter cause I'm getting the AEM stand alon unit and they only make it for OBD 1 and OBD 2. As for the Dizzy goto any auto parts store and get a dizzy for a 93' Del Sol DOHC VTec or any 92'-93' Integra GS-R ( must be a GS-R cause the GS-R's were OBS 1 ) or just goto drisbrituer king .com he's got plenty for a good price and they are ALL NEW not re-manned. Also Why use a SOHC ECU. Just go one E-bay and get a ECU for a DOHC VTec at a good price and save your money and wasting it on a chip.

Also you can send out your stock harness to Place Racing or HASport and they will convert the most of the harness for like $100 from obd o to obd 1. The Alternator doesn't matter all 90'-96' B series alternator are the same basicly. I'm using the OBD 1 B16 alternator that came with my motor on my OBD o set-up right now. Do some research on the web you'lll find what you need. It's not as hard as everyone is making it out to be.

 

Dude I know it may be cheaper doing it the way I think your doing it but it'll make life easier and may only cost alittle extra more money:
-Send out your stock wiring harness to HASport or any of the 100's of wiring conversion places on the internet and have them modify your stock harness to OBD 1 They will change all the nessecary connectors and such you need.

- Goto pep boys or where ever and get a dizzy for a Del Sol DOHC VTec for $190 with core. Then goto a junkyard and spend $20 or even just pocket 'em any injectors off any 92'-95' Civic or 94'-95' Integra. Doesn't matter which car most honda's are all 250cc's as long as they're OBD 1

- Then don't waste your money chipping a SOHC ECU or chipping a ECU period and just get a OBD 1 B16 ECU off of E-Bay , Parts Trader. They are going for very little money if you look at the right time.

- Then hook everything up and make the nessecary wiring connectionds yourself that you need to make that wasn't done when the harness was converted.
There.... simple.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 7PSiEF9ZC &raquo;</TD></TR><TR><TD CLASS="quote">Also YOU MUST USE OBD 1 injectors on obd 1 motor. OBD o and OBD 1 are two completely different style injectors ( pre- obd is peak hold and obd1 + is saturated )
</TD></TR></TABLE>

No, that means you have to re-wire the resistor boxes OFF the car. Better off keeping OBD0 injectors because they're same size anyways.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 7PSiEF9ZC &raquo;</TD></TR><TR><TD CLASS="quote">O.K. you guys are making this seem alot harder then it really is when converting from obd0 to obd 1 when it comes to B16 YES you get more power. obd 0 B16's have about 160HP and OBD1 and up have 170 HP. The extra 10 HP is supposely from the OBD1 set-up but some say it's cause the obd1 and up have slightly bigger cams. Right now I have a OBD1 B16 in my Civic HB right now. Also YOU MUST USE OBD 1 injectors on obd 1 motor. OBD o and OBD 1 are two completely different style injectors ( pre- obd is peak hold and obd1 + is saturated )</TD></TR></TABLE>

You don't have to use OBDI style injectors. You just use resistor packs with OBD0 injectors.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 7PSiEF9ZC &raquo;</TD></TR><TR><TD CLASS="quote">But I converted to OBD 0 to eas the swap but I am converting to OBD 1 ths winter cause I'm getting the AEM stand alon unit and they only make it for OBD 1 and OBD 2. As for the Dizzy goto any auto parts store and get a dizzy for a 93' Del Sol DOHC VTec or any 92'-93' Integra GS-R ( must be a GS-R cause the GS-R's were OBS 1 ) or just goto drisbrituer king .com he's got plenty for a good price and they are ALL NEW not re-manned. Also Why use a SOHC ECU. Just go one E-bay and get a ECU for a DOHC VTec at a good price and save your money and wasting it on a chip. </TD></TR></TABLE>

They don't make '93 del Sol VTECs AFAIK.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 7PSiEF9ZC &raquo;</TD></TR><TR><TD CLASS="quote">Also you can send out your stock harness to Place Racing or HASport and they will convert the most of the harness for like $100 from obd o to obd 1. The Alternator doesn't matter all 90'-96' B series alternator are the same basicly. I'm using the OBD 1 B16 alternator that came with my motor on my OBD o set-up right now. Do some research on the web you'lll find what you need. It's not as hard as everyone is making it out to be.</TD></TR></TABLE>

I never said it was hard. You just need to convert the ECU end of the harness to connect to the OBDI ECU, the distributor end to OBDI or whatever you want to use, and the O2 sensor must have the heater/ground wires (3 wires) added and run to the ECU.

I'm also a freakin' idiot and I can verify that you can use an OBDII distributor with an OBDI ECU as long as you match the plugs. I've done it before, so I am sure it works (it's been a while, I forgot about that).