whats this - FCD??

[FD3SNuttah]

[rotary_rogersFC]

looks like it might be, think its in the same place as mine

[vz-r_dave]

looks like it might be, think its in the same place as mine

[Brett]

Yup I\'d say its an FCD. Unplug it and take it off, there may be some identifying marks on it

[FD3SNuttah]

hey isnt it cool when you find goodies on your car you didnt even know you had! yep i suspected it was an FCD , (cant believe i didnt notice it earlier).

[Thud]

often wondered about these things - do they provide a benefit for stock cars or only if you have modifictions which give higher boost levels?

[Brett]

If you have a wastegate problem on a stock car they are usefull, and they are essential if you are upping the boost without fitting a new ecu.  (Stock ecu will cut fuel to rear rotor when it detects over boosting.

[Grizzly]

I personaly think unless you fit a bigger fuel system uping the boost is dangrous!

Yes the Fuel Cut kills the rear rotor which does it no good at all and can often cause a faliure just becouse it cuts fuel to one rotor and keep the other one live.

I just don\'t get the point of the Fuel Cut, To run more boost you need bigger pump and injectors, to run these you need a EMS.

I had a FCD on one of my early sevens that looked the same as that, i think it came from Pip? there was a recipt and one of his cards in the glove box when i got the  car.

[TRex]

Chris I dissagree.

 You can run more boost on any car from stock/standard without changing fuel pump, injectors, Ems, exhaust and all the kak that people keeps floating around here.

 All cars rolling off the production line are set up very conservertive, they all have a very large error margin, meaning that the fuel system install(factory) or any other system is highly under worked.
This is so for many obvious reasons, one being so the parts/system will last a very long time!

 95% of all EMS/ecu\'s that are made for standard factory vehicles have the ability to compensate, adjust, re-learn to any new parameters it senses.
 And they can do this easily because they have that room and margin for quite a large error or should I say different setting.

 I am in no way saying that your Mondeo turbo with 5psi of standard boost pressure can be wacked up to 10 psi without harm, naturally common sense should prevail.

[Grizzly]

Chris I dissagree.

 You can run more boost on any car from stock/standard without changing fuel pump, injectors, Ems, exhaust and all the kak that people keeps floating around here.

Ok, I have run 10psi on a stock T2 with a wide band fitted, I have seen the fluctuations the S**t Ic has caused. Trust me from first hand experiance of blowing one of these things up its not about IF it will run more boost! its all about has the Fueling got enough Duty left do deal with the Changes in temp.

The main thing is people will up the boost and then a month later when they have got used to it think i\'ll up it a bit more people on the net say its ok?

I relise alot of people buy T2\'s becouse they are cheap and you get a fast car for your money. But without checking stuff like is the pump seeing the 12v it should!, Has the Injectors been serviced recently? When was the last time the Fuel filter has been changed?. Its a car thats getting on a bit now and without doing the proper Mods i would not play with the Boost and with out doubt not tell somone its Ok without seeing the car first?

Don\'t forget Mazda put the Fuel cut there for a reason! do you have any idea what your Injector Duty is? NO becouse the stock EMS is not remapable.

[Grizzly]

95% of all EMS/ecu\'s that are made for standard factory vehicles have the ability to compensate, adjust, re-learn to any new parameters it senses.
 And they can do this easily because they have that room and margin for quite a large error or should I say different setting.

Do you know why? Altitude,Temp Octaine these all have alot to do with how your car behaves

For example why do you think you feel like your car has more power when its Foggy or less power when its the Hotest day of the year? A ems has tolarances in Air temp and Quantity entering the engine. Now what would happen if you uped your boost too much and reduce the extra fuel the EMS needs to cope with Weather changes etc?

I am not daft i\'ve had a Wide band for some time messing about with mods etc and the one thing i\'ve learnt is no too cars behave exactly the same way.

[TRex]

What you have said there basically agrees with what I have saying..

 YOU can up the performance, forget that, we will only talk about boost as thats what is about here.
 You can up the boost on ANY standard car \'within reason\' without losing sleep because you haven\'t put bigger injectors, bigger fuel pump, better Ems etc etc.  because the standard set up can take it!

[Grizzly]

Or how about this for a reason not to fit a FCD.

What would happen if you get a 15-16 year old Turbo car that the vac pipes have hardened with age and heat. Then you take off the safty (Fuel cut) What happens if for example a Actuator hose starts leaking?

Also i found for some reason when you up the boost you\'ll find Cracks starting to apear round the Waste gate its self due to the amount of heat that is caused when the car starts to lean off. This will mess up your Throttle responce and will make your boost fall again.

I have seen all this first hand as i have run a T2 at 10psi for a few years.

[TRex]

Just to confirm, I could of typed everything you said there as I understand how it works(more than I may type here) but just making it basic as people here are always mislead.

[TRex]

Not to get side tracked.. but

 The main point being..
 You can up the standard boost on any application within reason without upgrading other stuff..  :yes

 In an old used car with mileage and age parameters will of course change but the ems function would not really change/deteriote.