Apexi Boost Controller Kit For Pfc

[JustinP]

I just received the above item. I was just wondering, where the hell is the new solenoid wired into? (Bloody Japanese manuals!). I was hoping it would all connect into the extra port on the Power FC so I didn't have to start hacking the ECU wiring up, but it seems only the MAP sensor goes into this port? Is this correct?

And if that is correct, I assume I will have to wire the new solenoid into the ECU loom, into the same pins as used by the factory solenoid?

I guess if thats the case I could just cut the wires near the factory solenoid and wire directly up to the new Apexi solenoid which will save me getting the new Apexi solenoid wiring thought the firewall. I will just have to work out the polarity (although this should not matter on a solenoid anyway should it?)

Any help greatly appreciated!

[Robo's]

Should wire up into your standard plug for the standard solenoid

[paulr33]

yep robos is spot on

map sensor goes into the 3 pin socket on the FC and the solenoid uses the stock boost solenoid wires/plug

[JustinP]

Thanks guys! That will make life much easier. The only thing is the plug on the new solenoid doesn't fit the old plug, you think they would try and make this the same as the kit is model specific. Then again sourcing Nissan specific socket types for each model would be a real pain.

Anyhow I will just cut it off and wire it up - just to confirm, with a solenoid it should not matter which way the two wires are connected should it?

Thanks

[paulr33]

it will matter, if they are backwards it wont work

by wont work, the solenoid wont open, which means the gate wont open, which means unlimited boost, which means rebuild

so drive slowly and check and test it, monitor boost on the hand controller as well when doing it

[JustinP]

it will matter, if they are backwards it wont work

by wont work, the solenoid wont open, which means the gate wont open, which means unlimited boost, which means rebuild

so drive slowly and check and test it, monitor boost on the hand controller as well when doing it

Cool, I will give it a go this weekend. I should have a better than 50% change of getting it right 1st time as the solenoid has red (positive) and black wires, and the solenoid has brown (positive I think) and blue wires...

Can't wait to get the boost kit installed, then I can take the car to get the PFC tuned! No more nanny driving worrying about the thing detonating

[J34]

I had the same problem with my 34 the plug didnt fit so it was cut off and a new one put on.

[discopotato03]

Hi , I went through that situ recently with a late new R33GTST PFC Boost Kit . Because I hate hacking the cars loom I cut the standard wire between the plug and the factory solenoid valve . I think the wires were connected dark to dark for the earth side . My boost kit came with a long generic extention cord that had a white plastic plug with 90 deg oriented male spades . I simply crimped two female spades to the remaining section of original solenoid wire . It means having about 3 ft of wire coiled up (cable tied neatly) behing the airbox but it saves whimps like me cutting anything I dont have to . I need to make a flat plate that extends the bracket where the std solenoid sat to mount the Apexi solenoid valve . I could not find any way to mount the new valve in the std posi with the std airbox in place .

To revert back to the std ECU/valve use the male crimp spades on the solenoid half of its wires so it could plug back in .

IMPORTANT NOTE !!! If your R33 GTST hade the permanent earth mod to be in "high boost" all the time disconnect the earth . If you don't do this to a modded car the solenoid vale stays shut and it will boost untill it breaks something or in my case boost cuts .

BTW you can cable tie the map sensor to the std boost gauges map sensor mount bracket , sounds dodgy but works and good stealth value . Run the cable along the firewall , mines cable tied to some convienent steel tubes and drops down to where the main loom goes through the firewall in front of the ECU area . I pierced the gromet and fed the small plug through to the PFC box itself . A little bit of black silastic on the gromet would probably help stop it from tearing and letting water run down to the computer .

Have fun cheers A .

[grigor]

Cool, I will give it a go this weekend. I should have a better than 50% change of getting it right 1st time as the solenoid has red (positive) and black wires, and the solenoid has brown (positive I think) and blue wires...

You're correct, it doesn't care about polarity.

You'll need to tell the PFc that you now have the Apex boost kit fitted.

Don't set the boost too low. The PFc has a fuel cut if actual boost exceeds set boost by 0.25bar and that can happen very easily, especially if you try for a set boost of 0.4bar or such.

Start at around 0.7bar and vary the duty cycle until you're happy.

Edited March 8, 2007 by grigor

[JustinP]

Thanks guys - all your help is much appreciated. The only other thing is I'm planning to run the MAP sensor cable though the drivers side hole inside the wheel arch, then across inside the car to the PFC. The only thing is I think its going to be 30cm's short by the look of it Has any one else managed to fit it through that hole and have it long enough?

I would rather not go through the main loom hole on the passenger side of the firewall as it is located under the ABS unit and is almost impossible to get at I might have to cut the cable and extend it a bit...