Profec b Spec ll
G Kane and Joe popped over today, G has bought a nice profec b for his FC and so we set about installing it.
Generally these sort of devices are pretty simple to install, basically hook up the solenoid, mount it and wire it in.
However it’s the car that always makes it akward, and as usual it took longer than expected!
The first thing to tackle is removing the filter to turbo piping to gain easy access to the actuator and turbo piping as pictured below:

Once that is all out the way you should be able to see the pipe joining the actuator to the turbo, with its wire clips. Because these are probably at least 15 years old expect them to be well, pretty rusty:

We opted to slice the pipe at the connecting ends after snapping the clips (seeing as we were to replace them anyway).
When that was done, the new profec piping connected to either end which was then cut it half to give us two pipes, one from the actuator and one from the turbo. These will then connect to the solenoid.

With the new pipes on and cut all the air filter piping was put back on and the pipes routed how we wanted them, be sure to remember which pipe is which!!
Next up was mounting the solenoid, on my S13 I have screwed it to the wheel arch and we had intended to do that here, until we saw a convenient empty screw hole, I’m guessing left over from the old air box.

Sits perfect and no issues with bonnet closure. Once this is all secured the vacuum pipe that runs to the actual unit in the cabin needs to be hooked up, this can be t-pieced off the FPR. This time we t’ed it into a vacuum pipe coming off the inlet manifold as the stock dump valve is gone and the pipe was already t’ed off spare.
Finally we ran the the wiring and piping into the cabin and hooked it up, wired it in. Fired the car up and all was good!

Job’s a good un!
Meanwhile Joe was taking off his URAS BGW, as the car is booked into the bodyshop on Wednesday to have an S15 Spec R spoiler put on, should be looking pretty sweet on Thursday! I’m looking forward to seeing it! However, I must admit I really like it running despoilered, but I couldn’t convience Joe.


January 24th, 2009 at 8:42 pm
Hi house!
Dave said “ahh that horrible yellow car”