Ok well latly i have been having some issues with my secondary injectors not comming online. So today i pulled back the carpet to take a peak at the ECU, didn't really do anything just looked at her, unplugged the harness's and plugged them back in, didn't really ahve a goal. Not until i get the intake mani's back on and then i can test voltage at the ecu for the injectors or what ever. Anyways i was just reading another thread about someone looking at their ecu and seeing there FCD sitting there next to it. When i was looking i didn't see anything like that. That's why i hate buying modded cars, i never know what i am going to find or where i am going to find it. I know this car has an FCD though. Where could it be hiding? thanks
Dom
oh and if anyone knows why my secondary's wouldn't be comming online that info would be great as well.

 

Should be right next to the pressure sensor in the engine bay.....

 

Hum, the HKS FCD has to be hard wired in by the ECU.

I believe the RB FCD is a little harness that plugs inline at the boost sensor.

Maybe it is by the boost sensor?

It is possible that the injector clips are not plugged into the right injectors.

James

 

correct me if i'm wrong... because i'm tired and i most likely am...
but cant you just follow the wires out of the boost sensor? or do they go all the way to the firewall? Wouldn't a fcd have to be wired to the boost sensor unless it does something fancy, in which case it would have to connect somehow to the fuel system hell idk, i'm gonna stop talking... but i'd think it would be somewhere between the boost sensor and the firewall.

 

The FCD on the car is near the passenger strut tower, it has like hot glue near the wires and it is a little black box with a chip inside.

 

Does this clip inline before the pressure senor? Cause there a is a little black box thing that is plugged in in-line between the harness and the pressure sensor. I imagine that this is it. It has like 4 wires comming out of it. Assuming this is it, if i take it out i will not boost above 8 psi correct? If that is the case i will do that until i can get an rtek or something.

 

Yeah, that is the case. Just do that...if it continues to boost above 8.5 psi.... that would be odd.

James

 

Ok, so right now i have racing beat 3inch turbo back, TB mod, no emisions, DIY bov, stock TID on there right now with a cone, but have 3 inch ready to go on, also have a walbro 255, and new stock injectors. Oh and it has 6000 miles on a Kevin Landers rebuild, stock ports. I'm just weary about boost creep, should i worry about it? If i take out the FCD then there is no chance of boost creep correct? Cause that would be great. By the way it's an S4, i just got it and don't want to blow her up for a while. . lol.
Thanks
Dom

 

Boost creep has nothing to do with an FCD or a turbo. It's all about WG size. If your wg is not ported you'll definately creep. With a a FCD it will not hit fuel cut but you may be running out of fuel at that point. Without an FCD you will hit fuel cut and possibly save your engine but repeated hitting of fuel cut is not good at all either. Pick your poison or do it the right way and port your wg.

 

Oh i planned on porting the wastegate, just it will be a week or two before it gets done. That all makes sense though. Thanks