I am about to simplify my wiring harness because I am going single, and I need to know what I do and dont need.

Where the hell does the powerFC boost control solenoid plug into?

and if I eliminated all that this guy did

http://www.blackgto.com/RX7/wireharness1.jpg

would everything still function?

are any of the 8 colored solenoids useful when going single?

thanks

 

i removed all the above except the ISC with is for idle and the purge control.i am installing a pfc now. i have my harness removed and repairing the wires and connectors.
please be aware that if you cut all the above wires the ISC will not function. you must solder it again inside the harness. open the harness and check all the remaining connections.
all the 8 solenoids are not used in single.
if you just cutof the wires you must install a pfc otherwise the ecu will see errors and go in limp mode.
how are you planing to rewrap your harness? i am thinking the silicon self fused tape. also i found inside the harnes a hard vinyl jacket. is it nesesarry beneath the silicone tape?

 

It plugs into the wastegate solenoid plug. Just be careful, the wastegate plug has a light blue/white wire on it and the precontrol has a light blue/yellow wire on it. you might get them confused.




Another thing. I've been doing a lot of testing of the Power FC boost control logic on sequential twins and once I get some more miles on my motor I will be testing the single turbo control logic. I am going to throw out some suggestions based on what I know about sequential boost control logic. There are no guarantees that this works, as I need to finish breaking in my motor to test further. I think there are a lot of errors in the PFC instructions for the boost control. First, When you are setting boost, you really should recalibrate your MAP sensor if you have a Datalogit. If you don't, the PFC boost will read lower than other gauges. All the PFC can do is target a pressure value based on the MAP sensor reading. When tuning PFC boost control, you must disregard whatever your external gauges say and pay attention only to the PFC boost reading.

The PFC boost control works a lot like an AVC-R. In terms of actual settings, you need to set the Primary and Secondary values to the same, no matter what the manual says. So if you want around 14psi (1.0 kg/cm^2 peak boost on Commander) and have a 10psi spring, you could try (and I am throwing these numbers out):

Pr 1.0 50%
Sc 1.0 50%

After each run you would check peak boost on the Commander (or Datalogit logs). If boost is too low (say .9 kg/cm^2) you would keep the boost levels the same but increase duty in say 10% increments, up to the PFC max allowable value of 89%.