RB25DET ECU Question

[mabru]

Would the "MAP sensor" on an RB25DET be labelled as "Boost Control Solenoid Signal" on the ECU pinout? I want to properly install my FCD and I'm trying to figure out which signal to intercept. I'm assuming that the ECU reads the stock MAP off of the boost sensor to determine the boost mode.

Cheers

[RB30-POWER]

The RB25 doesn't use a map sensor.

It uses a hot wire air flow meter.

If you are trying to setup the fcd, you have to intercept the air quantity signal wire from the afm to the ecu.

what the fcd will do is clamp the afm at max voltage when the limit of the afm is reached so it doesn't cut completely. Just be careful as it will lean out to much if you go to much past this limit.

All the boost controller solonoid does it switch from 5psi - 7psi at 4500rpm.

Hope that helps some.

[Efex]

Hi.

The Boost Control valve is pin #25 on the ECU. The Map sensor reads boost/vaccum for the gauge. I do not see any terminals for the map sensor on the ECU pinout.

FX

[mabru]

That's what I thought, I realize it has and uses a hot wire AFM but I wasn't sure if the ECU was reading pressure in order to control the boost solenoid. The reason I ask is that I had issues running the FCD and SAFC on the AFM quality signal, they were wired in tandem and I think the signal was being weakened enough that I was getting no AFM signal at the ECU. I pulled the FCD out and all works but have recently hit fuel cut and want it back in.

Cheers