BuGz32crx32

ok so heres the deal.. i have a 90' crx si and did a engine swap to d16y8 and need the right ECU for it.. every1 keeps tell me OBD2 but witch one? OBD2A or OBD2B.. need help guys asap plz.

PG7 88-89 Integra (D16A1)
PM5 88-91 Civic/CRX DX (DPFI D15B)
PM6 88-91 Civic/CRX SOHC Si (1.6L SOHC)
PM7 89-91 Civic Si DOHC ZC (JDM EF3)
PM8 88-91 CRX HF
PM9 88-91 Civic/CRX STD
PR3 89-91 JDM B16A EF8/9 / Integra XSi
PR5 90-91 JDM Integra ZXi (1.6L SOHC ZC)
PW0 89-91 JDM/Euro B16A (DOHC VTEC)
PR4 90-91 Integra LS/GS (B18A)
PS9 88-91 4 Door Civic EX Auto (SOHC 1.6L)
P05 92-95 OBD1 Civic CX (D15B)
P06 92-95 OBD1 Civic DX (D15B)
P07 92-95 OBD1 Civic VX (D15Z1)
P08 92-95 OBD1 Civic/CRX VTi/VXi (SOHC VTEC)
P0A 94-95 OBD1 Accord EX
PR3 92-93 OBD1 JDM Integra RSi/XSi (B16A)
PR4 92-93 OBD1 Integra RS/LS/GS (DOHC)
PR7 92-95 OBD1 NSX
P13 93-95 OBD1 Prelude Vtec (H22A)
P14 93-95 OBD1 Prelude Si (H23A)
P27 92-95 OBD1 Euro/Asian Civic (non-vtec 1.6L)
P28 92-95 OBD1 Civic Si/Ex (SOHC VTEC D16Z6)
P29 92-95 OBD1 JDM Domani (SOHC ZC)
P30 92-95 OBD1 DelSol DOHC Vtec Si/EG SiR
P39 92-95 OBD1 JDM Accord SOHC VTEC
P54 92-95 OBD1 JDM Domani/1.8l Accord (B18B)
P61 92-93 OBD1 Integra GSR
P70 92-95 OBD1 Domani
P71 92-95 OBD1 Integra (SOHC VTEC D16A)
P72 94-95 OBD1 Integra GSR
P74/75 92-95 OBD1 Integra LS/GS
P76 94-95 OBD1 JDM Integra (SOHC ZC)
P84 92-95 OBD1 JDM Civic ETi (VTEC-E auto)
P91 92-95 OBD1 JDM Civic Coupe (SOHC VTEC)
P72 96-00 OBD-2 Integra GSR
P73 96-00 OBD-2 Integra Type-R (JDM & USDM)
P75 96-00 OBD-2 Integra LS/GS
P2N 96-01 OBD-2 Civic HX Coupe
P2P 96-01 OBD-2 Civic EX Coupe
P5P 97-00 OBD-2 JDM Prelude Type-S
P2T 99-01 OBD-2 Civic Si Coupe
PCT 98-01 OBD-2 Civic & Integra Type-R
PRB 01+ OBD-2 RSX Type S
PND 02-04 OBD-2 RSX Base
PNF 02-04 OBD-2 Civic Si
PRA 02-04 OBD-2Euro Civic Type R
PRC 02-04 OBD-2 JDM Integra Type R
PRD 02-04 OBD-2 JDM Civic Type R
PPA 02-04 OBD-2 CRV

D16SiHatch

well im assuming you already purchased a conversion harness right.. That being said when you did so you would either of purchased a obd0 to obd2a, or obd0 to obd2b jumper harness. If you have the obd2a jumper then get a p2p ecu from a 96-97 civic ex. if its obd2b then a 98-01 civic ex.

hotrod99

i think you need the p2p ecu but if your going to be modding the car you could use a chipped p28

BuGz32crx32

i havent done anything just yet just wanna know witch OBD2 is the stock d16y8 ECU and i'll be good with that..

and why is every1 always talking about the jumper harness for the OBD2's... why dont you just get the engine harness for the moter and the ECU for it and your all good right?


Modified by BuGz32crx32 at 5:08 AM 7/23/2008

Malgerus

Don't bother with a OBD-II and a Y8 ECU. OBD-II sucks *****. Just go OBD-I and use a P28. You'll be able to tune the ecu later on this way.

BuGz32crx32

ok thats kool but want 2 know whats the stock y8 ECU? OBD2A or OBD2B???

Malgerus

Depends what year Y8 you're talking. I'm pretty sure than A went from 96-98 and B from 99-00. Someone correct me if I'm wrong. Either way, don't bother running OBD-II. OBD-I is the better choice. Believe me, I did this swap personally a few years ago.

D16SiHatch

96-97 is 2a, 98+ is 2b. And yea since you say you haven't purchased anything yet then definately get a obd0 to obd1 conversion harness, and run a p28.

and no you dont want to use the engine harness from which your new engine came from. It won't plug into your cars stock firewall engine harness then. When you swap engines you always retain your stock harness, and then attach it to your new motor (with an exception for k-series i believe..) Then the jumper harness allows you to run your new engine with its respective ecu. And in many cases if your upgrading to a sohc or dohc vtec engine, your jumper subharness will give you the needed connections for your new engine such as a 4 wire o2 sensor, knock sensor, vtec solenoid, vtec pressure switch, etc.

93excivic

im guessing that your swapping a y8 long block into a crx, if you want to do a easy wiring then run the obd0 pr3 or pw0 (jdm b16 ecu), or you can get the obd0 to obd1 harness and run p28 ecu.

one-cam

thats not easy as it sounds.. going obd1 u will need obd1 dizzy from 92-95 civic, 4 wire o2 sensor from 95 civic ex, obd1 ecu and obd0-obd1 conversion harness

if u have a 90 civic si why dont u go with the stock ecu? p06 right?

BuGz32crx32

iight thx but still got 1 more problem... the Alternator in my car is for the motor but the plug thats on the engine harness to plug into the Alternator does not match up.. what do i do?

Malgerus

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BuGz32crx32 &raquo;</TD></TR><TR><TD CLASS="quote">iight thx but still got 1 more problem... the Alternator in my car is for the motor but the plug thats on the engine harness to plug into the Alternator does not match up.. what do i do? </TD></TR></TABLE>

Use your stock alternator.

BuGz32crx32

see thats the thing.. the crx alternator does not put out e-nuff charge for the battery and it keeps dying on me.

Malgerus

Did you use a volt meter to check the alternator's output, while the car is running?

Should be in the 14 volt range with the engine running.

I used an A6 alternator with my Y8 swap and never had a problem.

BuGz32crx32

the battery that i have is for the motor and the alternator is for the motor also.. if i swap out the alternater and the batt. to the crx alt. and batt. you think that will work?

BuGz32crx32

and not i did not use the volt meter.. the guy at autozone told me this...

Eaglekper0046

iTrader: (2)

Any OBD2 Y8 ecu will work. P28 would be better, but you can't use it in its stock form. The Y8 and the Z6 have far different timing maps.

Malgerus

^

Absolutely you can. I ran that setup for years. Ran good enough to get me low 15's in the quarter mile, and with no detonation on good gas.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BuGz32crx32 &raquo;</TD></TR><TR><TD CLASS="quote">the battery that i have is for the motor and the alternator is for the motor also.. if i swap out the alternater and the batt. to the crx alt. and batt. you think that will work? </TD></TR></TABLE>

Of course it will, just use your A6 alternator and stock CRX battery.

BuGz32crx32

ok just 1 more question.... the pully on the alternator does not match up to the pully on the motor.. so what do i do?

Malgerus

Use the belt that works with the alt pulley, and tighten that bitch up. Shouldn't slip.

BuGz32crx32

tried it. the belt's too small wont fit around the motors pully (and vise versa). and thats the biggist belt i could find.. u think if i just get the engine wireing harness and ecu that it would be all good?

Malgerus

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BuGz32crx32 &raquo;</TD></TR><TR><TD CLASS="quote">tried it. the belt's too small wont fit around the motors pully (and vise versa). and thats the biggist belt i could find.. u think if i just get the engine wireing harness and ecu that it would be all good? </TD></TR></TABLE>

Eh? Just go to your local parts store and search through all the belts until you find one that works.

Or, switch the pulleys on the alternators. Use the Y8 alt pulley on the A6 alternator, and just use the stock D16Y8 alternator belt.

BuGz32crx32

iight thx

Malgerus

any luck?

BuGz32crx32

i havent started anything yet.. i'll start friday thats when i get paid.. but still dont know what 2 do about the belt problem...