Nice dude I'm going to end up going the same route , I was doing the math on running Hondata and usable Honda ECU pretty much the same as fuel tech now a days . I'm building my 92 Hatch VX Turbo Sohc Zc . My chipped p72 had all kinds of problems . Would use the hair dryer trick to get my fuel pump to kick on lol
I’m pretty sure you can use the yellow output to trigger the vtec solenoid without the relay because the amperage is so low. That’s like the only output you can get away with triggering it at 12v. Any other high demand/high amp output would def be triggered at 0v like you said. 💪🏼
The outputs only trigger the ground side of the relay . The 86 pin needs to be switched power and 87 goes to whatever you are trying to turn on. The fan needs to be on a gray output, the fuel pump needs to be the blue pin 6.
