h22a p72 with s300 afr at 17.3:1 !!!!!!!!!!!!!!!
h22a p72 with s300 afr at 17.3:1 !!!!!!!!!!!!!!!
I am using the prelude.skl calibration and changed the fuel injector size to stock at 345. I was throwing a code 13(atmospheric pressure sensor) but disabled that, as I heard it was unnecessary, true? I am also throwing a code 16(fuel injectors), I checked to see if the injectors were stuck open, they weren't. My fuel setup is all new: aem rail, aem fpr, and stock injectors with the fpr set around 39 psi. The car idles fine and revs fine...so i don't see how I have an injector issue :?: Is the fuel map i am using on that calibration causing the afr to be so high or could something else be wrong? I disabled the code 16 and car basically runs the exact same except still have a 17:1 afr...any ideas?
what ecu is it?
it probably dont have the injector test circuitry,so just disable the error like u have & forget about it.
sorry,second part of question,u will have to provide some more info on the motor,like mods/O2 setup/etc & cal & datalog files for anybody to be able to help u with your AF probs.
lol,1st part of question,atmo sensor will only come in handy if u travel between different altitudes regularly.
it probably dont have the injector test circuitry,so just disable the error like u have & forget about it.
sorry,second part of question,u will have to provide some more info on the motor,like mods/O2 setup/etc & cal & datalog files for anybody to be able to help u with your AF probs.
lol,1st part of question,atmo sensor will only come in handy if u travel between different altitudes regularly.
Last edited by fly_n on Mon Nov 09, 2009 10:03 pm, edited 2 times in total.
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thething96
- Posts: 18
- Joined: Mon Oct 26, 2009 7:41 pm
- Location: Chicago Suburbs, IL
ecu: jdm p72 with s300j (37820-P72-003)
engine mods: just bolt ons....cai, catback exhaust/headers, stock o2 sensor.
I will try to post a cal and datalog file tomorrow night, I haven't done this before so hopefully can figure it out easily.
As for the injector wires, my harness is all new from rywire, the wires are in tact and not grounding off on my strut bar or anything. The car is a 91 civic hatch with the h22a jdm motor in it. Running the rywire wiring harness for my car/engine combo and their jumper harness at the ecu from obd0-obd1.
engine mods: just bolt ons....cai, catback exhaust/headers, stock o2 sensor.
I will try to post a cal and datalog file tomorrow night, I haven't done this before so hopefully can figure it out easily.
As for the injector wires, my harness is all new from rywire, the wires are in tact and not grounding off on my strut bar or anything. The car is a 91 civic hatch with the h22a jdm motor in it. Running the rywire wiring harness for my car/engine combo and their jumper harness at the ecu from obd0-obd1.
stock O2 sensor is narrowband,only 0-1V range & switches sharply around the 0.5V-stoic(14.7) AF mark from rich to lean & vice versa.
thats why u have the radical AF readings,u could be reading anything from say 15 to 18AF,assuming u havent changed the standard volt conversions in the closed loop tab.
u need to invest in a wideband setup & install that either seperate & running in parallel to your stock O2 or replace stock O2 with a wideband O2 setup that spits out a narrowband signal as well,assuming u want to run closed loop.
widebands are fairly well priced these days,good investment & first thing u should invest in if u want to tune yourself.
thats why u have the radical AF readings,u could be reading anything from say 15 to 18AF,assuming u havent changed the standard volt conversions in the closed loop tab.
u need to invest in a wideband setup & install that either seperate & running in parallel to your stock O2 or replace stock O2 with a wideband O2 setup that spits out a narrowband signal as well,assuming u want to run closed loop.
widebands are fairly well priced these days,good investment & first thing u should invest in if u want to tune yourself.
nobody can really tell u that for certain from the other side of the internet.
i would suggest seeing if u can get your tuner to email u a cal file that he feels will get u there ok,if u dont want to tow.
or u really need sombody to chime in that has used that prelly file on a similar setup,sorry im B18,cant help u.
if all else fails & u must risk it,just read your plugs first,see what they are telling u & stay right out of the throttle all the way there,especially under load.
i would suggest seeing if u can get your tuner to email u a cal file that he feels will get u there ok,if u dont want to tow.
or u really need sombody to chime in that has used that prelly file on a similar setup,sorry im B18,cant help u.
if all else fails & u must risk it,just read your plugs first,see what they are telling u & stay right out of the throttle all the way there,especially under load.