Installing Turbosmart Pneumatic Fuel Cut Defender On ST185

[dvmv_kim]

Hi there im just wondering where abouts you install the FCD on a celica st185 heres what it looks like http://www.capa.com.au/pics/turbo_elect ... t_fcd1.jpg

Cheers

[ChaosAD]

Id think it would go in the map sensor line to prevent it seeing the full boost pressure

[dvmv_kim]

do you know where abouts that is on the st185 or is there a pic u can post up and circle the map sensor line and thanks for your help

[Adydas]

GOOGLE + "fcd st185 install guide" = ANSWER!!

amazing what you find, the answers can be found on the net these days first link from alltrac.net..

http://www.alltrac.net/mods/FCDwiring.htm


Dont give out " I think " help.. its the ecu not the map sensor you need to be looking at.

[ChaosAD]

dont give out bad " I think advice ", and use google dammit..

has nothing to do with the map sensor unless that infos wrong, its to do soley with the ECU.. and rather than just give the link to the info just google

"fcd st185 install guide"

amazing what you find, the answers can be found on the first link from alltrac.net..

http://www.alltrac.net/mods/FCDwiring.htm

From the site you posted

The FCD becomes easy to install when you understand what it does. The boost sensor in your car reports a voltage to the ECU. When the ECU senses 4.4 volts, it will cut the fuel (fuel cut), and cause you to lose power. The FCD will intercept this voltage and put out a lower figure to the ECU, so that fuel cut cannot happen. The PIM wire tells the ECU the voltage, which must be cut. Each end of the PIM wire goes into the FCD so that the voltage can be altered. Only the PIM wire would be cut, the others would be "tapped", by connecting the wires to the harness, but not cutting them.

It works by preventing the boost sensor reaching 4.4v
THIS IS NOT AN ELECTRONIC FCD!

With a pneumatic one I would think it would stop the sensor reaching 4.4v by reducing the pressure at the sensor.

Makes sense to me, how the hell else would it work?

[dvmv_kim]

okay im lost here so how would i install this pneumatic FCD?

[ChaosAD]

googled turbosmart fcd
http://www.turbosmart.com.au/index.php?s=fuel-cut-defenders

Instructions
http://www.turbosmart.com.au/index.php?s=file_download&id=22

[ChaosAD]

Oh look at that, it goes on the map sensor line.

Get your facts straight before criticizing others adydas.

Not sure where the sensor is on your car but someone here should be able to point you in the right direction

[dvmv_kim]

yeah thats wot i was asking where abouts is the map sensor line on the st185 sorry i didnt tell you guys straight up

[Distrb]

forgive my ignorance, but isnt the 3sgte in an ST185 an airflow metered engine, thus doesnt have a map sensor?

So you'd need an electronic one for this car, as apposed to a pneumatic one?

[MrOizo]

forgive my ignorance, but isnt the 3sgte in an ST185 an airflow metered engine, thus doesnt have a map sensor?

They are but have a MAP sensor for the stock in-dash boost gauge and i am sure for the fuel cut for the ECU.
but this is "I think" info

[touge rolla]

forgive my ignorance, but isnt the 3sgte in an ST185 an airflow metered engine, thus doesnt have a map sensor?

They are but have a MAP sensor for the stock in-dash boost gauge and i am sure for the fuel cut for the ECU.
but this is "I think" info

yes but is correct "I think" info.

you could have just blocked vacuum line to the MAP sensor. As you can do that for free!

[dvmv_kim]

argh! you serious? just block the map sensor line.. anyways thanks for your help guys i have installed the FCD it only took me 2 minutes and i dont know if it needs a tune or what but it boost weird..

eg.

1st Gear - 15.2psi
2nd Gear - 16.5psi
3rd Gear - 17.0psi

the boost varies..

[touge rolla]

hmmmmmmm what is controlling your boost? assuming your car is mostly stock i wouldn't want it boosting that high.

[dvmv_kim]

Turbosmart Boost Tee and ive put an aftermarket 3" downpipe and the car is running rich so im boosting with plenty of fuel if that help's

[touge rolla]

considering it's not electronic i don't think 1.8psi variation is too bad (not good but not too bad)

[Akane]

Just block the pipe to the MAP sensor if you're feelin' rangi.

The MAP sensor only serves the piece of crap thing Toyota calls a boost guage, unless you go PowerFC then you'll need that sensor.

[dvmv_kim]

so your telling me i spent $200 for nothing when i can just block that pipe..

[ChaosAD]

on the mazda's you just cut the wire I think.
Is the sensor not used for the fuel map?

[flygt4]

yes.


and you will see variations in boost pressure dependant on load on the engine/gear you are in.