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sebta22
Regular


Location:
Perth
Registered:
August 2002
MAP sensor?? Sat, 19 April 2003 08:21 Go to next message
Sorry this must be a simple question Embarassed but where is the MAP sensor on a 4agze motor??

Please correct me but is it the grey sensor screwed into the inlet manifold near cylinder inlet runner no.4???
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sideshow
Forums Junkie


Location:
sydney
Registered:
March 2003
Re: MAP sensor?? Sat, 19 April 2003 08:56 Go to previous messageGo to next message
if its early 4agze then its on firewall i think

if its late 4agze then if u look at motor in a car its just under right side of intercooler
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sebta22
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Location:
Perth
Registered:
August 2002
Re: MAP sensor?? Wed, 30 April 2003 03:04 Go to previous messageGo to next message
What does the MAP sensor looks like??
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JDM hachi
Regular


Location:
was adelaide now newcastle
Registered:
February 2003
Re: MAP sensor?? Wed, 30 April 2003 03:47 Go to previous messageGo to next message
it's black, about a cubic inch in size, generally has "pressure sensor" written on it, and has a vaccuum pipe attached.
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sideshow
Forums Junkie


Location:
sydney
Registered:
March 2003
Re: MAP sensor?? Wed, 30 April 2003 07:43 Go to previous messageGo to next message
its like a small black cube

has a small pipe comin from it where a vacuum line slides onto it

has a number on it like 89250 12040
not exact number

has 3 wires goin to it

no its not screwed into the intake manifod
it always has a vacuum line goin to it
the vacumum line goes down behind the manifold and t pieced into another vac line just above the supercharger
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Rattlehead
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Location:
Melbourne
Registered:
May 2002
Re: MAP sensor?? Thu, 01 May 2003 18:17 Go to previous messageGo to next message
Can you do anything to it to mod it?
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sideshow
Forums Junkie


Location:
sydney
Registered:
March 2003
Re: MAP sensor?? Fri, 02 May 2003 09:14 Go to previous messageGo to next message
only mod u could do is maybe put a fuel cut defender if u r runnin more boost

but apart from that i wouldnt go playin with it
its a thin piece of flexible metal in there which bends under vacuum
if u adjust any setting to it it will stuff up yr feul map
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GIN51E
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I supported Toymods

Location:
Berowra-Sydney
Registered:
July 2002
 
Re: MAP sensor?? Fri, 02 May 2003 20:41 Go to previous messageGo to next message
just so people know "MAP" stands for Manifold Absolute Preasure.

there isn't much you can do wit the engines sensors to mod the engine, like you can do little things like put a resistor in the coolant temp sensor which will cause it to run a little richer but its not worth it, if you have an EFI car your best bet to get most power out if it is to get a unichip or even better a motec system and have it mapped for peak power throughout the rev range, if you just modd a sensor it might make it better at low revs but crap at high revs and so forth, it wont be consistant.

for example only time you get advantage from changing a sensor would be if the sensor can't keep up with mods for example if engine has had heaps of work done to it and sucking in heaps more air the original air flow meter might not be able to keep up therefor telling the computer there is less air going into the engine then their really is, which is when you get a new sensor but at the same time you still have to remap your computer,


EFI isn't like a carby its run by a computer therefor it has to be tuned by a computer. which isn't good as that means $$$$ but thats why i'm going to get a motec so it can be re mapped over and over again the only big expense is the buying of the motec in the first place but when you think about it a motec system isn't much more then getting a whole new exhaust system and you would get biger power gains by getting a motec system then an exhaust Very Happy
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sebta22
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Location:
Perth
Registered:
August 2002
Re: MAP sensor?? Sat, 03 May 2003 06:01 Go to previous messageGo to next message
A have looked through the entire loom and piles of spares and i cannot find my map sensor.

Can you buy these as spare parts from toyota?? partno.??

or can you buy a standard bosch unit?? i am using a wolf 3d ecu so doesnt need to be std unit. Also i will be running approx 12-14 psi

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sideshow
Forums Junkie


Location:
sydney
Registered:
March 2003
Re: MAP sensor?? Sat, 03 May 2003 06:07 Go to previous messageGo to next message
if u r runnin a wolf dont u just run a vacuum line from manifold
to the wolf
i havnt sen a wolf close up but most aftermarket ecu's have an internal map sensor
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sebta22
Regular


Location:
Perth
Registered:
August 2002
Re: MAP sensor?? Sat, 03 May 2003 07:07 Go to previous message
havent i got a red face Embarassed

that will teach me for not reading the manual!!

thanks for the help
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