I recently purchased a plx devices m300 with narrow band option for my ecu.

95 ls.

according to this site
http://www.plxdevices.com/PLXApp004.htm I need to jump the o2 heater wire to ground with a 20ohm 10 watt resistor.

Here is what I did.
first I jumped the heater wire from the ecu to ground with the resistor. That didnt work. So I went back under the hood and tried jumping the two black wires with the resistor. I have pretty much tried every combination with jumping the two black wires or even the green and black. Could someone please shed some light as to what wire is the actual heater ground and heater wire.

After resetting the ecu the cel 41 comes on 3 seconds after I turn on my car.

Thanks

 

i have a m300 on my 98 gsr ls vtec turbo w/ aem ems. and I didn't use the resistors at all and everything works fine . I'm not positive ,but I think the resistor are just for filtering noise to get a cleaner reading. and if your running a stock ecu you shouldn't need to use them. good luck

 

https://honda-tech.com/zerothread?id=1026855 - see if there's anything in there to help you out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NLmotorsports &raquo;</TD></TR><TR><TD CLASS="quote">i have a m300 on my 98 gsr ls vtec turbo w/ aem ems. and I didn't use the resistors at all and everything works fine . I'm not positive ,but I think the resistor are just for filtering noise to get a cleaner reading. and if your running a stock ecu you shouldn't need to use them. good luck</TD></TR></TABLE>

It simulates O2 heater load so you wont throw a CEL for a O2 heater circuit.

 

hey, thanks for your help. I think its gonna be a wiring issue at this point.