PROJECT, 4G MAP SENSOR

[shepherd79]

OK,
well, today is very nice day, so i figured why not try it.
i got spare 3g map sensor, cut the plug off and solder it to 4G accord map sensor. the sensor i got came out of 4g coupe.
here are weather conditions for today: 63 deg sunny.
here is what i have done to my car so far: headers, no cat, Dynomax muffler, K&N filter (stock replacement, i still have stock plastic air intake). Accel coil, 4G injectors.

i ran two test, one after another. the results are amazing. it has a lot more power. the bottom end between 2K -3K is very nice and it pulls hard all the way to 6K with ease.

i will have more testing done through out next week. i want to see what my gas mileage will be. i will keep you guys posted.

my final word: DO IT!!!!. it is cheap and it is easy to do.
just get spare 3G map sensor and 4G map sensor. connect the plug from 3G sensor to 4G sensor and connect the vacuum lines. it is that easy.

P.S. because 4G sensor is diff, it won't mount inside the box. so i just mounted on the side of the box by using the screw that holds one corner of that black box.

[guaynabo89]

Did you check to see if your old map sensor was faulty? That might have had something to do with it.

But then again I had someone very reputable tell me this a while back, of course I havent tried it yet. Still have the two wiring harnesses sitting in a box with a 93 civic map sensor. The reason for this being is, that I was told that the later model map sensors were less touchy to large cams than the older ones. For what reason I dont know, maybe just a better part.

Keep us informed cause maybe it'll make me go splice up the harness that I got sitting around and try it.

Oh and newer hondas have the map sensor directly on the throttle body in case someone is interested.

[shepherd79]

my map sensor was working properly.

[1988starter]

Yea go me for figureing that out

[Justin86]

Well looks like another trip to the pick and pull for me.

[bobafett]

snag a 2nd one while u are at it! !!

[Justin86]

well they I guess you will be driving down for the meet and make the exchange, unless you want me to mail it to you???????

[smufguy]

Yea go me for figureing that out

you deserve the credit bro. Thats a serious project IMO. When i get a chance, im gonna go get one myself. but you got the overbore 4g TB tho, not the stock one right? bastards .

Also Alex and you, What does this swap actually tell your computer and how does it actually boost performance? Does it widen the range of the fuel maps by actually reading more incoming air? or do they do it more accurately. How about a MAP sensor from a 5th gen? does it make any difference? Those were F23s right? anywho, props to you alex and You are always recognized starter (your name is chris right?)

[bobafett]

justin whats up with that meet? i might be able to make it on the friday, but not on sat or sun.... i could do something on thursday as well

[1988starter]

you deserve the credit bro. Thats a serious project IMO. When i get a chance, im gonna go get one myself. but you got the overbore 4g TB tho, not the stock one right? bastards .

Also Alex and you, What does this swap actually tell your computer and how does it actually boost performance? Does it widen the range of the fuel maps by actually reading more incoming air? or do they do it more accurately. How about a MAP sensor from a 5th gen? does it make any difference? Those were F23s right? anywho, props to you alex and You are always recognized starter (your name is chris right?)

Yea I have a 4th gen over Bore TB huge difference but still a little weird on idle nut I am working on it. BTW I origonally went 4th gen because I was adapting a 4thgen TB so I have no idea abou the 5th gen map.

BTW you were close on the name it is Corey

[smufguy]

Yea I have a 4th gen over Bore TB huge difference but still a little weird on idle nut I am working on it. BTW I origonally went 4th gen because I was adapting a 4thgen TB so I have no idea abou the 5th gen map.

BTW you were close on the name it is Corey

[email protected] << thats your email right? you signed my guestbook. thanks man. hahahaha, Ill remember you now

[1988starter]

[email protected] << thats your email right? you signed my guestbook. thanks man. hahahaha, Ill remember you now

well I am glad you remember but my E-Mail is [email protected]

[riced_roach]

What does this swap actually tell your computer and how does it actually boost performance? Does it widen the range of the fuel maps by actually reading more incoming air? or do they do it more accurately. How about a MAP sensor from a 5th gen? does it make any difference?

fuel mapping is all predetermined and bases a/f mixture on vacuum signal. If theres more pep it may either on the lean side or rich side of 12:1 a/f ratio. Real dyno time is required to see where the curve meets optimal performance but this may disregard any fuel trimming for emissions purposes. So in other words it may create more NOX or high in CO and HC readings.

[shepherd79]

who cares about emission crap. i don't have them here.
the map sensor sends the signal on how much fuel the car needs. in this case it sends a signal for more fuel. it is a good start, but that is not enough fuel.
our cars were leaned out a lot.

oh gas milage, well it went to hell. it is alright untill i floor it.

[smufguy]

who cares about emission crap. i don't have them here.
the map sensor sends the signal on how much fuel the car needs. in this case it sends a signal for more fuel. it is a good start, but that is not enough fuel.
our cars were leaned out a lot.

oh gas milage, well it went to hell. it is alright untill i floor it.

as long as it gives 20 mpg on a city i aint complaining cause thats what i am getting for heavens sake. I dont know what could be wrong, leaking injectors maybe??? anyway, i wanna see and feel how this extra boost feels like, i feel like my car does not move in high rpm which is what its supposed to do in High rpm with stock intake, but i sure as hell it wont choke after the 4g map sensor.

[1988starter]

I noticed about a 1 mile to the gallon loss

[86LXItooFAST4me]

if it is getting bad gas mil with the 4g map, would there be a way to maybe have a male and female plug on both maps for the 3g and 4g and interchange them when ever you want the extra pep. would this be possible or would you have to reset your ecu every time you change them? just an idea?

[86LXItooFAST4me]

oh, n/m if its only 1 mpg lost, i thought it was more than that from what shephard said. my bad

[1988starter]

I have mine set so I can switch them at will 2 vac lines 2 connectors ect

[1988starter]

I check mine every week and I noticed I went from 25.6 to 24.8 MPG

[86LXItooFAST4me]

so when you change yours out do you reset your ECU?

[shepherd79]

you don't have to reset ECU.

[Justin86]

justin whats up with that meet? i might be able to make it on the friday, but not on sat or sun.... i could do something on thursday as well

Yea I have class thursday until 2:30 so after that I'm game and NXRacer will be down here too, maybe you can help us with our little project for thursday night. Should be lots of fun and good video

who cares about emission crap. i don't have them here.
the map sensor sends the signal on how much fuel the car needs. in this case it sends a signal for more fuel. it is a good start, but that is not enough fuel.
our cars were leaned out a lot.

oh gas milage, well it went to hell. it is alright untill i floor it.

Yea and I'm thinking that since I pulled all my emission crap and P&P the TB it has been running a little rich and the high performance backfire was my first clue about it. Maybe this 4G MAP sensor will help bring my a/f back to normal.

[LX-i BOY]

hey riced roach i dunno what you are talking about if the air fuel ratio is 12:1 like you were talking about that would be lean teh stociometric ratio for the best of everything is 14.7:1 for air-fuel,

[bobafett]

yeah thursday night i might be down then i could make it for the friday portion of the celebration