S
skar
Guest
can anyone confirm that the little black box besides airfilter is the the MAP sensor (the one with a vacume hose leading to it), and if so, is this what a boost cut defender hooks up to?
M
memski
Guest
Yes, that's the map sensor - not sure what you mean by a "boost cut defender".
S
skar
Guest
Boost cut defender, (also known as fuel cut defenders) pushes the boost cut threshold up a couple of psi so that i can run more boost, mainly want it for those cold (denser) nights that the boost cut seems to take affect, I've set the bleed valve at 14psi
So if im guessing right the FCD hooks up to the map sensor
Most late model turbo systems have inbuilt defence mechanisms to guard against increases in boost pressure. Such systems are important, but are an obstacle when increasing boost pressure.
A Turbosmart FCD will allow boost pressure to be increased above the factory fuel cut and prevent momentary shutdown of the fuel injection system.
Fuel Cut Defenders increase or remove the fuel cut, depending on the model selected
Increasing boost pressure is often the most cost effective increase in horsepower
So if im guessing right the FCD hooks up to the map sensor
Most late model turbo systems have inbuilt defence mechanisms to guard against increases in boost pressure. Such systems are important, but are an obstacle when increasing boost pressure.
A Turbosmart FCD will allow boost pressure to be increased above the factory fuel cut and prevent momentary shutdown of the fuel injection system.
Fuel Cut Defenders increase or remove the fuel cut, depending on the model selected
Increasing boost pressure is often the most cost effective increase in horsepower
M
memski
Guest
But the Gtir doesn't have a fuel cut... Which is why you can run "unlimited boost" if you leave the actuator hose unconnected to the plenum.
Sounds more like an ignition problem, try having a look at your plugs.
J
jiw
Guest
im sure it doesnt have a map sensor, i think what you are reffering to is the boost gauge sender unit or that carbon cannister thing with three pipes on it, jeff 
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N1SMO
Guest
it is a sort of map sensor for the stock boost guage. it dose have a boost/ fuel cut, but if you disconect the actuator you will get unlimited boost.
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N1SMO
Guest
mine did till i got the clouds of white smoke, was good though lit all 4 wheels up in 3 gear
M
MORRISMINOR GTI-R
Guest
the R doesnt use a MAP sensor, it uses an air flow meter instead. and that box is the sender for the standard boost gauge.
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N1SMO
Guest
tha box reads manifold air pressure for the boost gauge hense its name a map sensor.
A
Anonymous
Guest
this is getting silly :evil: the R does not have a map sensor for tuning/mapping/monitoring purposes.the MAF is used for that :!:N1SMO said:
the MAP sensor you mention is only a ref for the boost gauge and apart from that,it does ferk all,so to call it a map sensor per say is a bit too fookin generous :!:
C
chrislloydus
Guest
The map sensor was only fitted so that it could be homolgated for use by the rally cars. Just on the road car, all it does is send the signal to the boost guage. Real waste of a fairly expensive sensor - especially when the ECU could have so easily made use of it !
.......and 'unlimited' boost is an urban myth. The boost will level off at 1.3-1.4 bar as the wastegate is opened by the force of air behind it rather than by the actuator as normal. The spring on the actutator simply wont hold that level of boost back.
.......and 'unlimited' boost is an urban myth. The boost will level off at 1.3-1.4 bar as the wastegate is opened by the force of air behind it rather than by the actuator as normal. The spring on the actutator simply wont hold that level of boost back.