Definative Answer Needed, Series 2 Rb25 Pfc Model Code

[NICKCEFFY]

Hey guy i need a bit of a definative answer please,

i have recently dropped an RB25 into my Laurel, so last weekend using the stock computer and AFM i ran the motor in after its rebuild, then during the week when we went to get it tuned the PFC i have would not let the car start, with the ignition on the computer would switch on get onto the monitor screen but then a relay at the back of the car would keep clicking off an on and the car would turn over but not fire, so then sticking a screw driver onto the 1st and 6th injectors would could not even here them firing.

So the question is what model PFC should i be using, i have one with the seriel number PFC RB259911-0009 but have since found a couple on other cars with the number ECR33010-****

Now going on the premise that if i had any wiring wrong to start the standard computer would not work and if anything was wrong with the PFC it wouldn't even load up as far as any menu's but mine i can get right into the monitor screen and check the AFM values etc, so does anyone know what the deal is.

Also the car has been stripped of excess wiring from the stereo,heaters, any door wiring(windows central locking etc) and air conditioning would any of this be the cause

Cheers

Nick

Edited February 6, 2009 by NICKCEFFY

[paulr33]

the PFC unit you have is correct, there are two versions of the apexi PFC for R33 Skyline

RB25 and ECR33 model codes - both work fine and will no issues, RB25 is first generation, ECR33 unit code is 2nd generation

it sounds like the PFC you have, has a fault with it, or something is wrong with your car

I would remove the PFC, put your stock ecu back in, confirm the car works and runs, starts OK

then if it does, reinstall the PFC and turn the car to ON, but dont start it, the hand controller should boot up and be normal (no clicking etc)

if its clicking, the PFC is damaged or your wiring is mangled (check if car is OK with stock ecu)

[Swiper the Fox]

How long has the battery been sitting?

sounds like a lack of power to me

[NICKCEFFY]

cheers guys,

first off, car runs absolutely fine on the standard computer, i've done about 800kms over last weekend running everything in making sure there was no issues with the car before installing the PFC boosting it up.

As for the battery i've relocated it to the boot but as it has been good for starting the car with no issues on the standard computer,

I haven't had another 33 to check the pfc on but i talked to the mechanic who tuned the car it came out of and he said it was fine and had no issues with his tuning,

but also when my mechanic went to try and wipe the original tune of it and start mine from scratch the computer wouldn't allow him to do that either with the laptop or the hand controller.

Could it be that i need to upgrade the main power wire from the battery directly to the computer so it doesn't have any voltage drop travelling halfway around the car from the boot to engine bay then back into the cabin?

Edited February 7, 2009 by NICKCEFFY

[NICKCEFFY]

Cheers for your help guys, i now have the problem sorted and the car runs on the PFC,

It was a lack of power issue as you said DirtGarage, it seems in the transplant of putting the 25 into the Laurel i missed out on wiring in the Unswitched power onto the computer and in so getting the full 12v power to the ECCS relay.

Cheers

Nick