Hi guys i was looking near my ecu a sec ago and found a fcd hooked in there...then i looked at mkiv.com and they do not reccomend this part??why???
Again, read the article - the HKS FCD is no better than the FFCD. The FCD and BCC do prevent fuel cut, but that's where the similarity ends. Only the BCC properly supports sequential operation of the oem twin turbos.ekool[/i] [B]the HKS FCD works fine. [/B][/QUOTE]Only if you don't care how smoothly your #2 turbo prespools. [URL=http://www.mkiv.com/techarticles/bc..._GReddy_BCC.htm]Read the article.[/URL] [QUOTE][i]Originally posted by SpdRcr0 said:no no.. Im sure that the BCC works excellent... technically once again.. they work the same... one determines fuel cut from boost, the other from the actual fuel cut of the ECU
I agree. I never said it was broken. I did say it doesn't properly support the sequential operation of the oem twin turbos.ekool said:The fact that people throw around the "idea" that the HKS FCD is broken, is just plain wrong.
Again, I agree, but only for TTC and single turbos.ekool said:The HKS FCD works absolutely fine.
When someone's #2 turbo blows because they're running the HKS FCD, the $ he has to spend fixing it becomes much more than a matter of opinion. Not giving all the facts when you say "the HKS FCD works fine" is just as much a lie.ekool said:Just like anything else in this world, its all a matter of opinion.
For years, mkiv owners have not blown the 2nd turbo because they've known not to run the FCD with the oem twins in sequential mode. Most have sold their FCD and replaced it with a BCC, or have gone single turbo and run the FFCD. You're the first in a long time that I've heard trying to tell people the FCD is just is just as good.ekool said:Can you point me to anybody that has blown the 2nd turbo due to the FCD please? ...
I agree. Read the article, and make up your own mind.ekool[/i] (from a previous post) [B]It works said:...As with any other mod, do your research before applying a mod. If you blindly do something like this to your car and something breaks, you deserve it.
I agree, controlling the boost is the job of the boost controller... However, some owners would prefer to be able to control when boost cut happens, to give themselves added safety. For example, on a cold night....Controlling the boost limit is the job of the boost controller (not a fuel cut prevention device). Fuel cut is only an oem 'safety measure' that should be competely disabled if an owner wants to be able to achieve maximum performance. I don't know anyone that is satisfied with only "controlling where fuel cut happens". When the BCC completely and permanently eliminates fuel cut, I call that a good thing.
I have done my own research on both the BCC and FCD. I have my own electronic test equipment(iam a eng tech by the way) at work and got ahold of both devices. THE FCD IS SHIT. First off the FCD sends a CORRUPT signal to the ECM, this is a false reading and the ECM can not read psi properly. If you dont know, there is a switch triggered by the ECM that tells when the #2 turbo should come on. Also there are 5 other signals that are tapped into the TPS line. These 5 other signals are now corrupted as well. HKS makes FCDs for other turbocharged cars and took those principles and applied them into the FCD used for the Supra, not taking into account how the sequential system works.ekool said:For some people, that is not a problem.
People that are TTC, ETTC, Single, etc.
The fact that people throw around the "idea" that the HKS FCD is broken, is just plain wrong.
It works, it does what it was intended to do, and it allows you to have greater control over where fuel cut happens, UNLIKE the BCC.
The HKS FCD works absolutely fine.
If someone wants boost cut to happen at a certain psi still, they can adjust where it happens. Some people would prefer this over not having a cut mechanism at all. And, if you decide you want to raise it just slightly for a race, then its just a turn of the knob. No need to bust out a volt meter and do any calculations/conversions, etc.
Just like anything else in this world, its all a matter of opinion. But to say that the HKS FCD "doesnt work" as you put it, is a lie.
A corrupt signal as in NOT A TRUE SIGNAL. A percentage of a input signal is not a true signal on the output. The signals passing through a BCC are all actual and true signals with no interferance.ekool said:Can you please define what you mean by corrupt?
The FCD (according to all documentation i've ever seen on it) alters the voltage based on a percentage.. the percentage is adjustable via the dial. Is this what you mean by corruption? That the signal can be altered?
Ie. the FCD is seeing X voltage, Y adjustment is made on FCD and Z is seen by the ECU.
I have adjusted my FCD and can adjust where fuel cut happens... my fuel pump is hot wired, and I am single... i dont think that an FCD is causing me any problems, and the car has been chugging along happily for over a year setup this way.