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Old 06-22-2008, 04:18 AM
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help with MAP sensor

i heard that if u unplug the map sensor on an obs, you get a few more horses and black smoke.

anyway i went out to my truck, popped the hood, and was looking for where to unplug it (relative to a pic).

theres a square flat plug there, with a hose right beside it

kinda confused on what to do exactly, but does anyone have a write up on this? or pics
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Old 06-22-2008, 07:39 AM
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cmon i just need to know if you unplug both the plug and the hose? just the plug? just the hose?

and i dont see how that plug is supposed to come out
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Old 06-22-2008, 07:46 AM
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ok taylor i did this last night. unplug that electric hook up. Then unclamp the hose and stick a bolt in it or a ink pen and clamp the bolt or ink pen tight and go drive I would recomment using a bolt and shove it far in there so you can clamp the hose back to the sensor just so it looks nice. the check engine light will turn on but it will smoke!!!!
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Old 06-22-2008, 07:48 AM
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Quote:
Originally Posted by taylorking View Post

and i dont see how that plug is supposed to come out
should be just a clip on there that you push and pull out its pretty easy! Good luck let me know what you think!
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Old 06-22-2008, 07:53 AM
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k im gonna go see wat i can do
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Old 06-22-2008, 08:11 AM
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alright im pretty sure i know what to unplug. its square black plug with 3 wires coming out into a harness. the hose is directly to the right, on the same platform as the plug, correct?

is there a vacuum on that hose cause i dont want it to suck the pen into it lol. but what exactly does this mod do, in terms of fooling the computer? basically a boost fooler?

Last edited by taylorking; 06-22-2008 at 08:11 AM. Reason: mispelled a word
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Old 06-22-2008, 02:44 PM
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tell me if i'm right ^^^
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Old 06-22-2008, 03:05 PM
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there may be more smoke but i dnt see how any power gains are possible,if thepcm cany read boost there is no way to deliver correct fuel, i think it would hurt more than help power the way to do it correctly on an obs to fool the pcm is to take the center wire if im not misaking is green, and ground it to the body , that fools the pcm
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Old 06-22-2008, 03:33 PM
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wht does the green wire do?
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Old 06-22-2008, 06:51 PM
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i did it today and rode across town. probably same amount of smoke but actually less throttle response.

i didnt care for the check engine light lookin at me the whole time lol so i plugged her back in. i think this is intended for manual transmission trucks but mmine's auto)
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