I have a little black box wired into my boost sensor on the passenger side strut tower and looms into the stock harness. It has FCD writen on it in white letters.

What is it?

 

"The Fuel Cut Controller allows the Turbo II to run at higher-than-stock turbo boost pressures without experiencing pre-programmed rear rotor fuel cutoff. The Fuel Cut controller essentially deceives the ECU (computer) into thinking the boost is not as high as it actually is. Consequently, the stock boost gauge no longer displays accurate boost pressure."

 

I push 6~7lbs. I don't have a boost controller...

 

Its a Fuel Cut Defender.

Stock, if you push more than 7.5 psi, the ECU cuts fuel to the rear rotor.
This device clamps the pressure sensor output voltage to a maximum value to prevent fuel cut.
It allows you to increase your boost level on the stock ECU without hitting fuel cut.

 

yeah I understand I just wanted to make sure I knew what it was because it seemed odd to be there when I didn't have a boost controller or anything...

 

It allows you to run past stock power levels assuming you have mods that increase the boost, turboback for example, but I think you have a 2.5", do a 3" and you'll get more boost. Heres a example of a fcd- http://www.mazdatrix.com/d2.htm scroll down, you'll see fuel cut off switch.

 

How do you have 2500+ posts and not know what an FCD is?

 

what the hell is it with you ***** relating post count with booked knowledge?

First, I know what an FCD is.

Second, this is my first turbo RX-7...why the **** would I know where an FCD mounts and what it looks like?

Same to this twit \/

 

You know, I was thinking that exact same thing.

 

Exactly.
Santiego has nearly 13,000 posts and still has no clue.

 

 

I didn't have a turbo RX-7 untill..hmmm....about a month ago when I swapped one in.
But, I did an assload of RESEARCH (booked knowlede or whatever).
That was a very basic question you asked, its in the FAQ's, and I am not a boob.
But my wife has 2 of them thank you.

 

You have 4.5k posts but you're still in canada, noone is perfect my northerly friend.

 

Searching the 2nd Gen section for "FCD" gets 500 hits (the most it will list)...

 

I did that...but didn't really get any hits concerning where it mounted or what it looked like...so I asked to be sure.

Most of the hits for "FCD" or parts suggestions topics.