Has anyone tried the EMS-based method to activate the relay? As in have hondata/neptune/ectune activate the relay at a lower temp than the thermo switch? The helms wire diagram shows the ecu connecting to the circuit between the relay and thermo switch, so I'm not 100% sure if it's an input or if it bypasses (electricly grounds) the thermo switch.
I ask because my b16 beater appears to have a bad thermo switch. Fuse is fine, relay is fine, fan jumps fine, and when A/C is activated, rad fan is off unless I jump the thermo switch. I just thought it was a severly crusted & falling apart radiator, stupid me. Oddly enough in 90* weather, the stocker w/full head manifold shield only overheats (>215F) if the car sits at a light for 2-3 minutes. Right now it has overheat protection and limits to 3k rpm after 215F.