randomhe12o

as i had stated in my last post i got a 92 civic hatch, with a DOHC ZC swap, it was running very rich, and i got it diagnosed today they told me that it's missing 2 o2 sensors and a MAF sensor. they recommended i get a new ECU
that wouldnt have to use those sensors to judge how much fuel to compensate for the air going through.
could someone tell me which ECU's would be best for this engine as the person who did this swap, obviously didnt have a clue... and im lost as to what to do now.

grumblemarc

iTrader: (4)

What ECU is in it now?

HondaPartsHero

OBD1 P29 is the correct ECU but its rare. Find a P06 and "chip" it for a P29 basemap. The shop may have been referring to a MAP sensor as this engine does not use a MAF sensor. I could be wrong but this engine should have the MAP on top of the throttle body unless you have an OBD0 model then you will either need to run a MAP on the fire wall or use a throttle body with a MAP on it (pretty much any OBD1-2 throttle body will work including Civic/Integra/Accord). You'll only need one 4 wire O2 with the P06 ECU. BTW what model hatch is it DX/VX/CX/Si?

randomhe12o

it's a DX
and im not sure what ECU is in it... i know that the TPS is on top it's a OBD1... i was reading on here and someone had told someone else to use a 88 - 89 teg ECU would that be better?

HondaPartsHero

no, use the DX (P06) ECU your car has and have it chipped for a P29 basemap by a reputable source, you don't want to convert to OBD0

randomhe12o

i dont understand... what do you mean chipped?

randomhe12o

sorry i know what you mean i had a brain fart there for a second... im not used to dealing with ECU's... this is the first time ive had to deal with one... i just took it out and it's a P75-A01 which i believe is a... 94 - 95 integra... would i be able to still use this and chip it?

HondaPartsHero

yeah socketed is another term. yeah you can socket it although it should run ok with the P75. Do you have any check engine lights on?

http://www.phearable.net/tech/
http://www.phearable.net/ecutuning.html

met

I havent messed with a zc but they used MAF sensors? I dont know when honda started to use them but pretty sure it was well after 2001. If your missing parts why not get the parts first then see what happens? If I am right about them not using maf meter I would go to someone else who knows more about hondas. When you unplug o2 sensors the ecu should go to default settings and run rich like you said it was doing.

randomhe12o

it was throwing TPS code and Fuel supply
i changed the TPS and it still stayed on, i took the throttle off, and someone had clogged the holes with rubber... i dunno if it was intentional or on purpose but after i took it off and put it back on with the hole unplugged the TPS code went off... fuel supply is still showing... i would imagine because the ECU isnt for the right car... let alone the right engine... the fuel specs would be different...
i found a P06 chipped ecu on ebay for 130...
would be buying the DX ECU chipped be better even tho i have the DOHC ZC swap?
the mechanic told me it didnt have any other parts where i could put any other o2 sensors... besides the one place he saw it.