05 c6 e40....best map sensor for 2.5 sd

fasttrackperformace · 02-05-2008, 01:17 AM

I have read that the GM pn 12580698 is a 2.5 bar sensor. I was told by another person that it is a 5 pin sensor with an integrated IAT. I called my local GM place and they told me its was 3 pin. To sum it up.....I am looking for the best 2.5 bar sensor to use with the 2.5 bar custom os for the e40. I dont want to buy the wrong sensor and pigtial. TIA

EC_Tune · 02-05-2008, 01:31 AM

There is no 2.5 Bar sensor that is MAP only. The 0698 version is 2 bar (15 PSI boost) So unless you are going above ~15 PSI you are good. If you are headed for 2.5 bar (Max ~21 PSI Boost) you will have to get one of the old "brick" style 3 bar MAP sensors and run a vacuum line.

fasttrackperformace · 02-05-2008, 01:32 AM

Thats what I wanted to do but there is a 256kpa limit in the computer. I am looking to run over 15 psi.

http://www.hptuners.com/forum/showth...1186#post81186

People are mentioning this number as 2.5 bar map sensor. I wouldn't mind if it was 2.5 map and Iat. If the Iat was correct I could just use it....or leave it unwired if not. Right?

Bluecat · 02-05-2008, 05:58 AM

Everyone says you can use a 3 bar map with the 2.5 os, but how? I understand that os still stops at 255kpa reguardless, but you can't even configure it for a 3 bar sensor. The map linear has has a max value of 256. Unless you can plug in a value around 300, I don't see how you can make it read correct.

What's the purpose of the Linear B?

Chris@HPTuners · 02-10-2008, 03:34 PM

You need to be careful with the Cobalt becuase they have 3 MAP sensors if i remember correctly.

1. combo MAP + IAT goes in the manifold, 2.5 bar
2. inlet air pressure (in the intake path) 1 bar i think
3. baro sensor (2 bar i think)

You should be able to wire up the 2.5bar MAP + IAT sensor and just not use the IAT part.

The numbers for this sensor are linear 270.59 (the max you can enter is 256) and offset -3.30, which i think the min you can enter is 0. It will be close but not exact.

In the later E38 ECM the limits are different and you can use a 3bar sensor no problems. I was getting confused between the two in a previous post as i was working on the E38 code at the time. Sorry.

Chris...

INTMD8 · 04-20-2008, 08:31 PM

Stumbled across this post so I figured I would add some info.

A 3bar map sensor will not work properly. Since you can't enter a value higher than 256 it will always read incorrectly. (I had a 3 bar installed and read map values while applying regulated pressure to the sensor and a boost gauge). I'm sure you could install and use this sensor but your KPA reading will never actually be right.

2 bar obviously only reads 2 bar, so a real 2.5bar sensor is needed.

I found this sensor online-

20-250kpa and inexpensive.

http://www.freescale.com/files/senso...t/MPX4250A.pdf

http://www.mouser.com/search/refine.aspx?Ntt=MPX4250AP

Installed it in an 05 C6 with APS twins, re-tested with regulated air/gauge and it reads up to 256kpa while matching boost gauge values perfectly.

Bill@HPTuners · 04-20-2008, 08:40 PM

Thanks for the info, I think I'll sticky this thread

INTMD8 · 04-21-2008, 07:58 PM

No problem.

Badassbird · 11-28-2008, 09:31 PM

So I am just checking before I go ahead and order this for a customer. Is the above freescale sensor the way to go with the custom 2.5bar os?

VYSSLS1 · 11-28-2008, 10:31 PM

yep that sensor is a true 2.5bar, it is used in a lot of after market ECU's here in aus and works a treat

TYRFRYR · 05-14-2009, 11:18 AM

Quote:

Originally Posted by EC_Tune

The 0698 version is 2 bar (15 PSI boost) So unless you are going above ~15 PSI you are good.

Is this a brick style sensor or does in fit into the MAP port on the LS3 intake maniflod ?

5_Liter_Eater · 05-14-2009, 01:05 PM

fits in the manifold.

TYRFRYR · 05-14-2009, 04:45 PM

Thanks Bill,

P.S. Is that a Lap day at TMS??

5_Liter_Eater · 05-15-2009, 06:08 AM

TWS in College Station. Lots of fun!

rcsfastgto · 06-22-2009, 07:00 AM

I have this map sensor can someone tell me how it hooks up to my 05 gto wiring and what I have to change in the E40 and or tune? TIA

Ironmancan · 01-04-2010, 05:11 PM

Bump...

5_Liter_Eater · 01-06-2010, 08:38 AM

It just plugs in...

c6dude · 01-06-2010, 01:45 PM

Here is one I made that uses the Mouser electronics unit that is plug and play.

http://www.dpecorvettes.com/gpage4.html
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Snyper · 04-17-2010, 11:05 PM

Quote:

Originally Posted by c6dude

Here is one I made that uses the Mouser electronics unit that is plug and play.

http://www.dpecorvettes.com/gpage4.html
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.
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.
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Im using this sensor in my car right now and it seems to work pretty good. Im using a linear of 256kpa(is this correct?) and my factory 1bar setup read 103kpa key on engine off..so I set the offset to 9 to get to the same 103kpa..

c6dude · 04-18-2010, 05:42 PM

Quote:

Originally Posted by Snyper

Im using this sensor in my car right now and it seems to work pretty good. Im using a linear of 256kpa(is this correct?) and my factory 1bar setup read 103kpa key on engine off..so I set the offset to 9 to get to the same 103kpa..

Snyper

The Sensor's range is 20-250kp
http://www.dpecorvettes.com/gpage4.html

0.2V = 20 kPa - 2.9 PSI
4.9V = 250 kPa -36.25 PSI
Accuracy +- 1.5% of the full scale value (+- 0.5 PSI)

This sensor is linear which makes tuning easier.
Here is a chart that should help you out.

Perry

02-05-2008, 01:17 AM	#1
fasttrackperformace Tuner Join Date: Oct 2006 Posts: 67	05 c6 e40....best map sensor for 2.5 sd I have read that the GM pn 12580698 is a 2.5 bar sensor. I was told by another person that it is a 5 pin sensor with an integrated IAT. I called my local GM place and they told me its was 3 pin. To sum it up.....I am looking for the best 2.5 bar sensor to use with the 2.5 bar custom os for the e40. I dont want to buy the wrong sensor and pigtial. TIA

02-05-2008, 01:31 AM	#2
EC_Tune Супер Модератор Join Date: Apr 2003 Posts: 7,852	There is no 2.5 Bar sensor that is MAP only. The 0698 version is 2 bar (15 PSI boost) So unless you are going above ~15 PSI you are good. If you are headed for 2.5 bar (Max ~21 PSI Boost) you will have to get one of the old "brick" style 3 bar MAP sensors and run a vacuum line. __________________ Dynamic Tuning Solutions & Strictly Performance are now one! We are induction, exhaust, engine, transmission, and suspension specialists in the Los Angeles area. We do all Gen III segment swaps - email your file to EC_Tune 818-342-5693 for purchases and/or appointments sp_motorsports@hotmail.com 7444 Reseda Blvd. Suite K Reseda, CA 91335 Always Support Our Troops!
	Location: Near Ken

02-05-2008, 01:32 AM	#3
fasttrackperformace Tuner Join Date: Oct 2006 Posts: 67	Thats what I wanted to do but there is a 256kpa limit in the computer. I am looking to run over 15 psi. http://www.hptuners.com/forum/showth...1186#post81186 People are mentioning this number as 2.5 bar map sensor. I wouldn't mind if it was 2.5 map and Iat. If the Iat was correct I could just use it....or leave it unwired if not. Right? Last edited by fasttrackperformace : 02-05-2008 at 01:39 AM.

02-05-2008, 05:58 AM	#4
Bluecat Senior Tuner Join Date: May 2006 Posts: 215	Everyone says you can use a 3 bar map with the 2.5 os, but how? I understand that os still stops at 255kpa reguardless, but you can't even configure it for a 3 bar sensor. The map linear has has a max value of 256. Unless you can plug in a value around 300, I don't see how you can make it read correct. What's the purpose of the Linear B?
	Location: Catlettsburg, Ky

02-10-2008, 03:34 PM	#5
Chris@HPTuners HP Tuners Owner Join Date: Mar 2003 Posts: 5,284	You need to be careful with the Cobalt becuase they have 3 MAP sensors if i remember correctly. 1. combo MAP + IAT goes in the manifold, 2.5 bar 2. inlet air pressure (in the intake path) 1 bar i think 3. baro sensor (2 bar i think) You should be able to wire up the 2.5bar MAP + IAT sensor and just not use the IAT part. The numbers for this sensor are linear 270.59 (the max you can enter is 256) and offset -3.30, which i think the min you can enter is 0. It will be close but not exact. In the later E38 ECM the limits are different and you can use a 3bar sensor no problems. I was getting confused between the two in a previous post as i was working on the E38 code at the time. Sorry. Chris... __________________ I count sheep in hex...
	Location: Melbourne, Australia

04-20-2008, 08:31 PM	#6
INTMD8 Tuner Join Date: Feb 2006 Posts: 46	Stumbled across this post so I figured I would add some info. A 3bar map sensor will not work properly. Since you can't enter a value higher than 256 it will always read incorrectly. (I had a 3 bar installed and read map values while applying regulated pressure to the sensor and a boost gauge). I'm sure you could install and use this sensor but your KPA reading will never actually be right. 2 bar obviously only reads 2 bar, so a real 2.5bar sensor is needed. I found this sensor online- 20-250kpa and inexpensive. http://www.freescale.com/files/senso...t/MPX4250A.pdf http://www.mouser.com/search/refine.aspx?Ntt=MPX4250AP Installed it in an 05 C6 with APS twins, re-tested with regulated air/gauge and it reads up to 256kpa while matching boost gauge values perfectly.

04-20-2008, 08:40 PM	#7
Bill@HPTuners HP Tuners Support (foff667) Join Date: Jun 2004 Posts: 16,974	Thanks for the info, I think I'll sticky this thread __________________
	Location: Trenton, NJ

04-21-2008, 07:58 PM	#8
INTMD8 Tuner Join Date: Feb 2006 Posts: 46	No problem.

11-28-2008, 09:31 PM	#9
Badassbird Tuner Join Date: Aug 2004 Posts: 76	So I am just checking before I go ahead and order this for a customer. Is the above freescale sensor the way to go with the custom 2.5bar os? __________________ &&Scott racing and Performance&&www.ts-performance.com&&937-743-2505
	Location: Franklin,OH

11-28-2008, 10:31 PM	#10
VYSSLS1 Senior Tuner Join Date: Dec 2005 Posts: 329	yep that sensor is a true 2.5bar, it is used in a lot of after market ECU's here in aus and works a treat
	Location: Sydney Australia

05-14-2009, 01:05 PM	#12
5_Liter_Eater Senior Tuner Join Date: Nov 2005 Posts: 2,735	fits in the manifold. __________________ Bill Winters '05 Black on black M6 Z51 - 617 RWHP / 567 RWTQ - ECS Paxton 1500 kit and blower cam, 1 3/4" long tube headers, Z06 H-Pipe, Corsa Sport exhaust, stock injectors enlarged to 60#/hr by FIC; 2 bar speed density tune by me using HP Tuners and AEM UEGO "When life hands you lemons you upgrade to a C6." - Me
	Location: Houston, TX

05-14-2009, 04:45 PM	#13
TYRFRYR Tuner Join Date: Mar 2007 Posts: 51	Thanks Bill, P.S. Is that a Lap day at TMS?? __________________ 2009 - PSB - G8 - A6 TYRFRYR Magazine Article in April 2010 issue of HPP
	Location: Southern Louisiana

05-15-2009, 06:08 AM	#14
5_Liter_Eater Senior Tuner Join Date: Nov 2005 Posts: 2,735	TWS in College Station. Lots of fun! __________________ Bill Winters '05 Black on black M6 Z51 - 617 RWHP / 567 RWTQ - ECS Paxton 1500 kit and blower cam, 1 3/4" long tube headers, Z06 H-Pipe, Corsa Sport exhaust, stock injectors enlarged to 60#/hr by FIC; 2 bar speed density tune by me using HP Tuners and AEM UEGO "When life hands you lemons you upgrade to a C6." - Me
	Location: Houston, TX

06-22-2009, 07:00 AM	#15
rcsfastgto Tuner Join Date: Apr 2007 Posts: 33	I have this map sensor can someone tell me how it hooks up to my 05 gto wiring and what I have to change in the E40 and or tune? TIA

01-04-2010, 05:11 PM	#16
Ironmancan Tuner Join Date: May 2008 Posts: 40	Bump... __________________ 06 Twin Turbo GTO
	Location: Jacksonville NC

01-06-2010, 08:38 AM	#17
5_Liter_Eater Senior Tuner Join Date: Nov 2005 Posts: 2,735	It just plugs in... __________________ Bill Winters '05 Black on black M6 Z51 - 617 RWHP / 567 RWTQ - ECS Paxton 1500 kit and blower cam, 1 3/4" long tube headers, Z06 H-Pipe, Corsa Sport exhaust, stock injectors enlarged to 60#/hr by FIC; 2 bar speed density tune by me using HP Tuners and AEM UEGO "When life hands you lemons you upgrade to a C6." - Me
	Location: Houston, TX

01-06-2010, 01:45 PM	#18
c6dude Junior Tuner Join Date: Oct 2005 Posts: 19	Here is one I made that uses the Mouser electronics unit that is plug and play. http://www.dpecorvettes.com/gpage4.html . . . . . __________________ Check out my videos http://www.youtube.com/profile_videos?user=C6Dude402 My Website www.dpecorvettes.com
	Location: