3 bar MAP sensor

[starscreem]

hey guys i have a 91 lumina i just sent to the junk yard and i yanked the map sensor off of and like a foot of the wire and plug. my question is does any one no what bar this sensor is i cant seem to find the part number for it. if any one can please let me no i would be so happy thanks every one. oh ya its off the 3.1 motor to if that matters

 

[DIMONDSTAR77]

the map sensor number is 12569240.

 

[alansupra94]

Would a lumina even use a 3 bar GM sensor? I would think it would be a smaller one like maybe 1bar or even lower.

 

[MY1GDSM]

As far as I know the 88 Turbo T/A was the Only car to have one on it...That is a 3 bar map sensor

 

[toofast82]

As far as I know the 88 Turbo T/A was the Only car to have one on it...That is a 3 bar map sensor

im pretty sure youre right

 

[live4my4g63]

anyone know what vehicles come with these, i think im going to get one at u pull it

 

[the_mork]

I'm pretty sure they only come from a turbo TA. You can get one on ebay for about $50 though.

 

[turboglenn]

Yep I've only found a turbo T/A and the first year for grand nationals (86 IIRC). I seriously doubt you'll find one at a u-pull-it yard but good luck.

 

[the_mork]

I ought to ask, what are you using for engine management that you can even take advantage of a MAP sensor. I don't see anything listed in your profile.

 

[twdorris]

Yep I've only found a turbo T/A and the first year for grand nationals (86 IIRC). I seriously doubt you'll find one at a u-pull-it yard but good luck.

If you do, you might want to grab the whole car.

Thomas Dorris
ECMTuning, Inc.

 

[turboglenn]

If you do, you might want to grab the whole car.

Thomas Dorris
ECMTuning, Inc.

SO true!!!!!!!!!!!!

 

[live4my4g63]

i havent updated anything at all in my profile lately sorry, but i have dsmlink and i read that a 3 bar map sensor helps make tuning easier and reads more accurate

 

[the_mork]

I would generally agree. It certainly is wonderfully helpful if you are running ecu based boost control and it is nice for basic tuning but far from necessary.

 

[live4my4g63]

so basically its nothing major, does anyone know how much easier it makes the tuning

 

[the_mork]

For most WOT tuning it isn't a big deal. It is also going to depend somewhat on your tuning system. I'm not very familiar with link but in an evo or something like that you can generally tell approximately where you are in your boost curve by your load so that at least you'll have an idea of when you are spoolup or when you are fully boosting.

My general rule of thumb is to point for 12.5:1 AFR during spoolup up to about 8-10psi and then drop quickly to a richer setting like 11.1.:1 AFR for the rest of the pull, it can be hard to find where that point is without a MAP sensor but it also is just a reference point that could be moved around if you wanted to or you can base your desired AFR on RPM and ignore bost completely.

It is hard to quanitfy how useful it is for tuning but the simplest answer is that it is nice but not really $50+ nice. I use it because I run SD since dialing in a 2g MAF on an evo8 ecu is a bit of a pain and I got it into my head that SD would be really cool. Besides being necessary for my car its biggest use for me is helping me to dial in gear-dependent ecu controlled boost, without a MAP sensor I wouldn't have even bothered trying because eyeballing a gauge that shoots all over the place in a single run just isn't going to be anywhere near as accurate as comparing it all in a log on your couch.

 

[live4my4g63]

ok cool thanks alot that makes since now

 

[JayRolla]

If you get a map sensor you can make sure your maf is perfectly calibrated. Plus you can get good data like spool times. Also SD has been released for ecmlink so could always upgrade.

 

[93_tsi_fwd]

anyone ever had experience with this gm map sensor?

Firebird Trans Am 1989 89 Map Sensor 3 Bar 12223861 NEW | eBay

 

[m_0ney_pit]

doesn't look like it comes with the pigtail

 

[93_tsi_fwd]

yeah, no pigtail but i already have one.

 

[Imback]

I have never seen anyone use that one. I bought this one years ago and is still working fine in my car and works perfectly well with link as well.


GM 3 bar Map Sensor Kit Turbo FAST ACCEL DFI AEM 3bar - eBay (item 180343125862 end time May-22-11 20:52:36 PDT)

 

[snowborder714]

See your thread on the link forums.

 

[-red97rum-]

Works great. I was using one until I started boosting past what a 3 bar can read..