anyone know which wire on the ecu the blue wire is supposed to be hooked up

 

I heard the ICM wire but it didn't work for me...

I hardwired it to strait from the dizzy to the tach.

(i'm assuming your talking about the tach wire)

 

search about thsi "blue wire mod" i think hes talking about the safc.

 

i am talking about the blue wire mod. the apexi instructsions only covers the wire that you are supposed to use and i don't have a wiring diagram. so i was wondering if one of you guys who has the mod done could hook me up with the wire info.

 

You hook up your blue wire on the SAFC to the O2 Sensor wire. It's the White/Red wire on OBD1, and the thicker All White Wire on OBD2.

 

thanks man, thats what i was looking for.

 

can the blue wire mod be done on the V-AFC?

 

The blue wire mod is used only on SAFC's. I think the Nissan's use this wire on some sensor. But on our Honda's we have no use for it. So you can hook up this blue wire to the 02 sensor output and then goto the Sensor Check on the SAFC "etc." panel. And look at Sensor 2. It should be the voltage from your 02 sensor output. Some people use this to tune their cars with a a/f reading and their stock tach (because the SAFC rpms will not work in this mode).

It's a cheap way of doing it. And is definitely not as efficent as a wideband but that's why they're running the AFC in the first place.