d15b running rich w/ p28, need help
03-10-2007, 06:29 AM
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d15b running rich w/ p28, need help
i have a swapped jdm d15b and its running really rich with a p28 ecu 
and i wanted to swap it to a p08 ecu, but is there a way to convert 1 wire o2 to 4 wire o2????
and i wanted to swap it to a p08 ecu, but is there a way to convert 1 wire o2 to 4 wire o2????
03-10-2007, 07:59 AM
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Re: d15b running rich w/ p28, need help (laoboisosilly)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by laoboisosilly »</TD></TR><TR><TD CLASS="quote">i have a swapped jdm d15b and its running really rich with a p28 ecu and i wanted to swap it to a p08 ecu, but is there a way to convert 1 wire o2 to 4 wire o2???? </TD></TR></TABLE>
you need to add a transistor to enable the O2 sensor heater or you will throw a code.
Q30 needs to be added - C144 is its value.
For JDM ECUs that lack the O2 heater circuitry, such as the P08, simply add a SMT version of the 2N4401 (general purpose NPN switching transistor) to location Q15 on the underside of the PCB. The proper part number for the transistor is MMBT4401, and they are readily available through retail suppliers such as http://www.digikey.com
http://pgmfi.org/twiki/bin/vie...ensor
and i wanted to swap it to a p08 ecu, but is there a way to convert 1 wire o2 to 4 wire o2???? </TD></TR></TABLE>you need to add a transistor to enable the O2 sensor heater or you will throw a code.
Q30 needs to be added - C144 is its value.
For JDM ECUs that lack the O2 heater circuitry, such as the P08, simply add a SMT version of the 2N4401 (general purpose NPN switching transistor) to location Q15 on the underside of the PCB. The proper part number for the transistor is MMBT4401, and they are readily available through retail suppliers such as http://www.digikey.com
http://pgmfi.org/twiki/bin/vie...ensor
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