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View Full Version : Greddy BCC (FCD) Fitting Issues.....

supra-mike1984
25-01-08, 18:08
Hey everyone,

Very strange thing happened today.....

Car is almost BPU, Walbro Fuel Pump, NGK BKR7EIX Plugs, double decat and Veilside explosion cat-back system.

I went have the 1.0 bar restrictor ring fitted today, and on route decided to see how high it'd boost. It went up to 1.23 bar, however it didnt achieve boost cut! I hadnt even fitted the FCD yet as I was planning to fit it that afternoon! :blink:

It gets better,

On return of getting the restrictor ring fitted I decided to have a go at fitting the BCC (FCD).

I wired it up as shown on here: http://www.mkiv.com/techarticles/bcc/bcc_install/bcc.htm

I set about starting the car, and a warning light appear on the dash, and the car ran like sh*t and kept spluttering.

I followed the advise and opened the unit to tweak the screw as it may have apparently been set too low, and the car didnt alter with the warning symbol still showing.

I have removed the BCC and the car has gone back to normal, and with the ring it is achieving around 1.06bar, howver, its still not reaching Fuel Cut!!

I cannot see a FCD already there, so can anyone please shed any light on this for me!?!?!?!? :blink:

Mike
jamesmark
25-01-08, 18:19
How long did you stay at 1.23 bar? fuel cut is not instant takes around 3 seconds to kick in.

Have you set up the BCC correctly? as in the correct voltage?

Have you cut into the correct wire?
supra-mike1984
25-01-08, 18:33
How long did you stay at 1.23 bar? fuel cut is not instant takes around 3 seconds to kick in.

Have you set up the BCC correctly? as in the correct voltage?

Have you cut into the correct wire?

It stayed above the 1.0 bar mark for at least 5 seconds without losing any power!

I followed the guide on that link word for word, I tried using a Voltmeter but it kept reading 11v which i thought was odd, irrelative of how far I turned the screw.

The only wire I cut was the MAP Black/Yellow one and wired the ends to the BCC as stated on that guide :blink:
Hermit
25-01-08, 20:19
I followed the guide on that link word for word, I tried using a Voltmeter but it kept reading 11v which i thought was odd, irrelative of how far I turned the screw.

The only wire I cut was the MAP Black/Yellow one and wired the ends to the BCC as stated on that guide :blink:

Going by the SAFC manual (I know it's not a BCC, but it uses the same connections), the ECU pinouts are different for VVTi.
That probably explains why you got 11V (that wire was connected to the wrong ECU pin, sounds like it was an output).
http://www.apexi-usa.com/support_wiring.asp
The wire colour could well be different also.
Chris Wilson
25-01-08, 21:11
Green to ECU, white to MAP sensor splitting the black / yellow map lead, red to switched ign positive, black to chassis ground. You shouldn't have played with the adjuster... !

As Hermit says, VVTi ecu has totally different pinouts to none VVTi, you have a VVTi pinout diagram?
supra-mike1984
26-01-08, 12:58
Green to ECU, white to MAP sensor splitting the black / yellow map lead, red to switched ign positive, black to chassis ground. You shouldn't have played with the adjuster... !

As Hermit says, VVTi ecu has totally different pinouts to none VVTi, you have a VVTi pinout diagram?

Hey Chris,

Yeah i got the pinouts off this thread http://www.mkivsupra.net/vbb/showthread.php?t=33116&highlight=guess+need+connect+the+fcd+maf

I did all as above except that I connected the black wire to the Ground wire on the diagram rather than the chassis.

I agree also that it may have not been the best idea to have turned the screw! Is this BCC still useable/tunable, or is it ready for the bin?? :blink:
supra-mike1984
27-01-08, 13:45
Hooray ive managed to fix it!!!! Set to 4.1v as stated and running ok! :)
Hermit
27-01-08, 18:37
That's good to hear :)