2JZ747

Just taken some pics with the lowered springs and also the front mount intercooler. The springs dropped the car about 50mm all around with the ride quality almost the same as stock.
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I am looking at doing the 12V mod to the fuel pump ECU (bypassing the dual mode fuel pump operation) so its always running at high capacity. Do anyone have a wiring diagram of the fuel pump ECU on the Arsito or has anyone done this mod before?? I am able to find the 12V power supply wire to the fuel pump ECU but there's four other wires attached to the harness and one of it is the output signal to the fuel pump ECU. So which one is it?? The only reason why I wanted to do this mod because I'm experiencing so detontation around 4000rpm when the 2nd turbo comes on (running about 16psi). Refer to the link below for more detail why we do the 12V mod;
http://mkiv.com/techarticles/12v_mod/12v_mod.htm

Epik

iTrader: (7)

nice install. glad to see you still have the front crash bar in place, it makes a big difference in chassis stiffening.

i'm waiting on the info for the 12v FP re-wire.. I have a 255lph intank and I'm going to do the same. Are you referring to putting a 5 pole 30A relay on the pump?

El Captain

That huge Front Mount is going to starve with that bumper! That thung is freakin tall!

2JZ747

This mod would will get the pump a constant 12V at all time and would be similar to your relay mod for the fuel pump (the end result will be the same). All you need to do is to find the output signal wire from the main ECU to the fuel pump ECU; cut this wire and joint it to the 12V power supply from the fuel pump ECU to bypass the dual stage operation. The colour coding of the output signal wire to the fuel pump ecu is different from the Arsito to the Supra, therefore I was hoping that someone would have done this mod before to tell me which wire is it.

mvallido

Man that car looks super fast and yet look VIP. How many points have you lost yet?

2JZ747

Thanks guys. Haven't yet got pull over or loss any points and I hoping to keep it that way.