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Map Sensor Question?

  • Thread starter Thread starter MY 85 GT
  • Start date Start date Feb 25, 2014

MY 85 GT

10 Year Member
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Feb 25, 2014
#1
  • Feb 25, 2014
  • #1
I was wondering something...my map sensor is from a Speed density car but it is now a MAF car..i looked up the part number from 87 to 89 and there different part numbers would that hurt anything?
 

madspeed

Colonel Mustard
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#2
  • Feb 25, 2014
  • #2
nah, its the same thing
 

madspeed

Colonel Mustard
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#3
  • Feb 25, 2014
  • #3
a little clarificaion


Speed Density uses the vacuum port. That's the MAP part of the sensor. In Speed Density setups, when the Key is turned on, its takes a Barometric reading, and updates the Barometric under certain conditions. Like under a load when vacuum is low. When its not taking a Baro reading, its doing the MAP calculations based on Manifold Pressure.
 

MY 85 GT

10 Year Member
Mar 7, 2008
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Feb 25, 2014
#4
  • Feb 25, 2014
  • #4
madspeed said:
nah, its the same thing
Click to expand...
you sure why are the part numbers different then when you look one up for a SD car or one for a MAF car....lol
 

MY 85 GT

10 Year Member
Mar 7, 2008
1,852
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New Jersey
Feb 25, 2014
#5
  • Feb 25, 2014
  • #5
madspeed said:
a little clarificaion


Speed Density uses the vacuum port. That's the MAP part of the sensor. In Speed Density setups, when the Key is turned on, its takes a Barometric reading, and updates the Barometric under certain conditions. Like under a load when vacuum is low. When its not taking a Baro reading, its doing the MAP calculations based on Manifold Pressure.
Click to expand...
I know mine doesn't have any vac to it being it is MAF now but wouldn't the inside electric part be different in some way ??? if you know what I mean..
 

madspeed

Colonel Mustard
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#6
  • Feb 25, 2014
  • #6
bap and map sensors are the same! the only reason ford changed part numbers is because of the hose deturent (cap) that was put on the hose fitting. On the early cars if you pull the lable off it has the old bap part number on them !
 

MY 85 GT

10 Year Member
Mar 7, 2008
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New Jersey
Feb 25, 2014
#7
  • Feb 25, 2014
  • #7
madspeed said:
bap and map sensors are the same! the only reason ford changed part numbers is because of the hose deturent (cap) that was put on the hose fitting. On the early cars if you pull the lable off it has the old bap part number on them !
Click to expand...
OK COOL..just was doing some reading and saw someone say there were different...
 

madspeed

Colonel Mustard
Founding Member
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#8
  • Feb 25, 2014
  • #8
good technical read here


http://sbftech.com/index.php?topic=19336.0
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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Feb 26, 2014
#9
  • Feb 26, 2014
  • #9
You can use your MAP sensor with the vac line removed as a BAP sensor. It should run fine.

If part ever fails, i'd replace it with an 1989+ BAP sensor
 

Onefine88

Previously 89SSC18
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Aug 3, 2006
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Feb 26, 2014
#10
  • Feb 26, 2014
  • #10
Mustang5L5 said:
You can use your MAP sensor with the vac line removed as a BAP sensor. It should run fine.

If part ever fails, i'd replace it with an 1989+ BAP sensor
Click to expand...

This! I converted my car to MAF last summer when I added the supercharger. I removed the vacuum line.

It runs great.
 

MY 85 GT

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Feb 26, 2014
#11
  • Feb 26, 2014
  • #11
Ok guys thanks just was thinking that last nite was wondering if it would be ok to leave it that way...
 

88LX5.Oh

15 Year Member
Dec 30, 2011
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Feb 26, 2014
#12
  • Feb 26, 2014
  • #12
It it wasn't ok, then hundreds of people, myself included, would be driving around with half assed MAF conversions.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,141
17,839
224
Massachusetts
Feb 26, 2014
#13
  • Feb 26, 2014
  • #13
Some do considering a lot don't wire up the VSS and fuel pump connections.
 
Reactions: 88LX5.Oh

88LX5.Oh

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#14
  • Feb 26, 2014
  • #14
Mustang5L5 said:
Some do considering a lot don't wire up the VSS and fuel pump connections.
Click to expand...
You do have a point there. But thankfully I was smart enough to go ahead and do these steps lol
 
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