Mikeb353

iTrader: (1)

Set things off I did all the searching i could from Honda-tech to Google. I'm still confused about this whole Ecu situation and its making me . This sounds like an easy solution but i guess I'm not getting the concept. Alright as you all know from my title I'm Building my first b20/vtec. Since this is my first one id rather research but sometimes searching doesn't give you all the answers you want.

I have purchased a b20 block and b16 head it should be coming in about a week or so. I Drive a 97 Acura Integra Ls 5-speed and according from the chart below I have a p75 OBD2.

How to identify your ECU

PG6: 88-89 Integra (all makes)
PM5: 88-91 Civic/CRX DX
PM6: 88-91 Civic/CRX SOHC Si
PM7: 89-91 DOHC ZC (JDM 'EF' ECU)
PM8: 88-91 CRX HF
PR2: 89-91 ZC (Euro)
PR3: 89-91 JDM B16A EF8/9
PR3-J00 or J51: 92 JDM Integra B16A EF8/9
PW0: 89-91 JDM B16A EF8/9 DA6-XSi
PR4: 90-91 Integra LS/GS
PS9: 88-91 4 door Civic EX Auto
P05: 92-95 OBD-1 Civic CX
P06: 92-95 OBD-1 Civic DX
P07: 92-95 OBD-1 Civic VX
P08: 92-95 OBD-1 Civic D15 JDM
P0A: 94-95 OBD-1 Accord EX
P13: 93-95 OBD-1 Prelude Vtec
P14: 93-95 OBD-1 Prelude Si (non Vtec)
P27: 92-95 OBD-1 EG JDM Civic 1600 sohc
P28: 92-95 OBD-1 Civic Si/Ex
P30: 92-95 OBD-1 DelSol DOHC Vtec Si/EG SiR
P54-G31: 1997 Honda Accord 1.8 LS
P61: 92-93 OBD-1 Integra GSR
P72: 94-95 OBD-1 Integra GSR
P72: 96-00 OBD-2 Integra GSR
P73: 96-00 OBD-2 Integra Type-R (JDM & USDM)
P74/75: 92-95 OBD-1 Integra LS/GS
P75: 96-00 OBD-2 Integra LS/GS
P2N: 96+ OBD-2 Civic HX Coupe
P2P: 96+ OBD-2 Civic EX Coupe
P2E: 96+ OBD-2 Civic DX Coupe
P2M: 96+ OBD-2 NZ Civic SOHC VTEC
P2T: 99+ OBD-? Civic Si Coupe
P5P: 97-00 OBD-2 Prelude Type-S (JDM ECU)
PBA: 97+ US Acura 1.6EL
PCT: 98+ JDM ITR / CTR
PCX: 99+ OBD-? S2000


Since I'm building a b20/vtec I know there are going to be different plugs this is where its giving me a headache. I have looked and searched online and came across some products That i thought would help the situation:

My first find was a OBD2 to OBD1 Conversion harness:


I this the easiest way to go, from this harness what will i need. ( I also heard obd2 ecu are really not that great for tunning correct me if I'm wrong) Or am i better off just buying a new ECU (obd1 gsr harness)

Mikeb353

iTrader: (1)

anyone...

I AM WEASEL

iTrader: (1)

for the wiring you will need an obd2a to obd1 ecu jumper as well as an obd1 ecu either a p28 or a converted p06, because as you stated obd1 ecu's are much easier to tune. You will also need to either add the vtec wiring or get a subharness.

DOHCter

if you don't want a jumper harness, you can get a jdm p73 or pct ecu (itr/ctr) which have obd2 plugs, but don't need the typical obd2 secondary crank angle senor or second o2 sensor. but you will still have to add your vtec and knock wiring to your engine harness. but thats really easy also

0mtber

iTrader: (2)

Your best bet is going to be to use an obd2 to obd1 conversion harness which is a plug & play device along with a chipped obd1 vtec ecu mapped for your b20/vtec setup.



For more info read up on http://www.phearable.net/tech/....html

If you have any more questions feel free to im me or give us a call

Mikeb353

iTrader: (1)

Wow thank you for all the responses i know its a newb's question....

Alright I'm just thinking about buying either a one of these ecus and buy the harness and it should do the trick and save me a headache what do you guys think..

P72: 96-00 OBD-2 Integra GSR
P73: 96-00 OBD-2 Integra Type-R (JDM & USDM)

Looking/ Buying either Ecu