Need mass air conversion instructions

88workcar · 02-01-2001, 08:33 PM

No I am not happy about it. If this works I am takeing the E out, and going back to the B. I need to know what wires to move at the computer. I do have a wiring harness but I was told to go this route.

------------------
88workcar
1988 Mustang LX - 12.17 @ 112 MPH!

LOCASH · 02-01-2001, 08:43 PM

The following was reprinted from
Joe's Mustang EEC-IV Page
courtsey of Cliff Koch

(original artivicle at http://www.iaw.com/~aubertin/88mgt/eec-iv/sd2maf.htm)
Check your Private messages if this doesn't work. Good luck.

------------------
86 GT T-tops, AOD, B&M shift kit and hammer shifter, ROH wheels, K&N, Timing,MAC headers, 2.5 off road H, 2.5 American Thunder, 87 spindles, rear disc,SS lines, BBK 1.5, poly bushings, Steeda G-trac and subs, Strut bar.
"DRIVE LIKE YOU STOLE IT!"

[This message has been edited by LOCASH (edited 02-01-2001).]

LX XLR8R · 02-01-2001, 10:02 PM

no, no, no..dont say its true..anyways..what way are you doin it????either replace the entire EFI harness(much easier) or buy a pro-m conversion kit($50) from downs ford..hope this helps

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

Mach 1 · 02-02-2001, 01:28 AM

replace the efi harness to convert to mass air easy? This makes no sense, is completely not required at all. You need one harness from the computer to the meter, readily available and simple to install. Buy the book "how to modify your fuel injected ford". It has wiring diagrams that are simple to understand and easy to read. compare the speed density schematic to the mass air one, and you will see the only differences.

------------------
1993 GT/AOD
'93 Mustang GT

88workcar · 02-02-2001, 07:53 AM

Locash, It is not working. All I need to know is what four wires to move, and where to move them. Thanks all..

------------------
88workcar
1988 Mustang LX - 12.17 @ 112 MPH!

Skyman · 02-03-2001, 02:27 AM

Wait a minute... Whats going on?? Why are you ditching the speed density?

Skyler

------------------
-1989 Saleen Mustang #406-
TFS Heads, Edelbrock intake, E-303, 3.73's, 1 5/8 shortys, Offroad-H, 2chamber flows, 36psi FPR, 15degrees timing, 70mm tb, 73mm maf, 24lb inj, Crank pulley, MSD6A, Alum driveshaft.

Added: B&M Ripper, Subframes, & Turndowns.

macx · 02-04-2001, 12:22 AM

CHECK OUT WWW.CORRAL.NET - IN THEIR TECH SECTION, THERE'S A COMPLETE DESCRIPTION

88workcar · 02-04-2001, 09:14 PM

I have two differant harnesses. Both of them have a grey plug that is at the computer. My car has none. Do I have to replace the dash harness. Or can I modify at this point. If so how and where. The fuel pump will not cycle, and if I jump it out the car still don't start. The reason behind the swap is my engine will not run right after, three tear downs and I have changed every think else you could emagine. Mabey the speed density has met it's match.

02-05-2001, 03:07 AM

Jason,you could always get a custom chip burnt also.This would take care of any idle problems,etc.Just let me know.I know of some people who have a great reputation for burning chips for mustang owners.

------------------
Paxton Blown 87GT

93CobraR · 02-05-2001, 10:21 AM

Here, this is from the Corral.

There are 4 wires that need to be run to the MAF, 2 signal wires and 2 power wires. If you do not have a prefabricated harness, you will have to come up with the MAF connector and two pins for the EEC-IV connector. The MAF can have two types of connectors on it, a 4 pin or a 5 pin connector. The pins are marked A B C D (E) on the MAF sensor. The chart below shows what wire needs to be connected to which pin number on the EEC connector:
4 pin 5 pin
MAF EEC-IV MAF EEC-IV
A 37 (power) A 37 (power)
B 40 or 60 (ground) B No connection
C 9 (signal return) C 40 or 60 (ground)
D 50 (signal) D 9 (signal return)
E 50 (signal)
MAP sensor modification
Disconnect the vacuum hose going to the Manifold Absolute Pressure sensor located on the firewall on the upper drivers side. Leave the vacuum port on the sensor open and plug the vacuum line from the engine. Do *not* disconnect the electrical connector from the sensor.

If you need some more just go to: http://www.corral.net/tech/powerplant/maf_tech_2.html

------------------
87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 13.012
Best MPH 104
Best 60' 1.816

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

88workcar · 02-06-2001, 07:41 AM

While waiting on you all to reply, I called Iteractive systems teck. The guy said that his harness is $29.00 and for sure the easiest way. I have changed my harness twice and niether of them work. It only takes a 1/2 hour to do it. But I really don't feel that this is my problem.
Mustanguy, it starts and Idles so good it isn't funny. It sounds tougher than Japanise arithmatic. It has no power, and will not hardly rev passed 2000rpm.

02-01-2001, 08:33 PM	#1
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Need mass air conversion instructions No I am not happy about it. If this works I am takeing the E out, and going back to the B. I need to know what wires to move at the computer. I do have a wiring harness but I was told to go this route. ------------------ 88workcar 1988 Mustang LX - 12.17 @ 112 MPH!

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02-01-2001, 08:43 PM	#2
LOCASH Registered Member Join Date: Oct 2000 Location: Santa Lucia di Budoia, Italy Posts: 217	The following was reprinted from Joe's Mustang EEC-IV Page courtsey of Cliff Koch (original artivicle at http://www.iaw.com/~aubertin/88mgt/eec-iv/sd2maf.htm) Check your Private messages if this doesn't work. Good luck. ------------------ 86 GT T-tops, AOD, B&M shift kit and hammer shifter, ROH wheels, K&N, Timing,MAC headers, 2.5 off road H, 2.5 American Thunder, 87 spindles, rear disc,SS lines, BBK 1.5, poly bushings, Steeda G-trac and subs, Strut bar. "DRIVE LIKE YOU STOLE IT!" [This message has been edited by LOCASH (edited 02-01-2001).]

02-01-2001, 10:02 PM	#3
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	no, no, no..dont say its true..anyways..what way are you doin it????either replace the entire EFI harness(much easier) or buy a pro-m conversion kit($50) from downs ford..hope this helps ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

02-02-2001, 01:28 AM	#4
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	replace the efi harness to convert to mass air easy? This makes no sense, is completely not required at all. You need one harness from the computer to the meter, readily available and simple to install. Buy the book "how to modify your fuel injected ford". It has wiring diagrams that are simple to understand and easy to read. compare the speed density schematic to the mass air one, and you will see the only differences. ------------------ 1993 GT/AOD '93 Mustang GT

02-02-2001, 07:53 AM	#5
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Locash, It is not working. All I need to know is what four wires to move, and where to move them. Thanks all.. ------------------ 88workcar 1988 Mustang LX - 12.17 @ 112 MPH!

02-03-2001, 02:27 AM	#6
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Wait a minute... Whats going on?? Why are you ditching the speed density? Skyler ------------------ -1989 Saleen Mustang #406- TFS Heads, Edelbrock intake, E-303, 3.73's, 1 5/8 shortys, Offroad-H, 2chamber flows, 36psi FPR, 15degrees timing, 70mm tb, 73mm maf, 24lb inj, Crank pulley, MSD6A, Alum driveshaft. Added: B&M Ripper, Subframes, & Turndowns.

02-04-2001, 12:22 AM	#7
macx Registered Member Join Date: Oct 1999 Location: Gordonville MO USA Posts: 448	CHECK OUT WWW.CORRAL.NET - IN THEIR TECH SECTION, THERE'S A COMPLETE DESCRIPTION

02-04-2001, 09:14 PM	#8
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	I have two differant harnesses. Both of them have a grey plug that is at the computer. My car has none. Do I have to replace the dash harness. Or can I modify at this point. If so how and where. The fuel pump will not cycle, and if I jump it out the car still don't start. The reason behind the swap is my engine will not run right after, three tear downs and I have changed every think else you could emagine. Mabey the speed density has met it's match.

02-05-2001, 03:07 AM	#9
Mustanguy Guest Posts: n/a	Jason,you could always get a custom chip burnt also.This would take care of any idle problems,etc.Just let me know.I know of some people who have a great reputation for burning chips for mustang owners. ------------------ Paxton Blown 87GT

02-05-2001, 10:21 AM	#10
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	Here, this is from the Corral. There are 4 wires that need to be run to the MAF, 2 signal wires and 2 power wires. If you do not have a prefabricated harness, you will have to come up with the MAF connector and two pins for the EEC-IV connector. The MAF can have two types of connectors on it, a 4 pin or a 5 pin connector. The pins are marked A B C D (E) on the MAF sensor. The chart below shows what wire needs to be connected to which pin number on the EEC connector: 4 pin 5 pin MAF EEC-IV MAF EEC-IV A 37 (power) A 37 (power) B 40 or 60 (ground) B No connection C 9 (signal return) C 40 or 60 (ground) D 50 (signal) D 9 (signal return) E 50 (signal) MAP sensor modification Disconnect the vacuum hose going to the Manifold Absolute Pressure sensor located on the firewall on the upper drivers side. Leave the vacuum port on the sensor open and plug the vacuum line from the engine. Do not disconnect the electrical connector from the sensor. If you need some more just go to: http://www.corral.net/tech/powerplant/maf_tech_2.html ------------------ 87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's,GT-40 heads,long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's. Best time 13.012 Best MPH 104 Best 60' 1.816 Visit my site at: http://www.geocities.com/cobrar93_2000/MyPage.html

02-06-2001, 07:41 AM	#11
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	While waiting on you all to reply, I called Iteractive systems teck. The guy said that his harness is $29.00 and for sure the easiest way. I have changed my harness twice and niether of them work. It only takes a 1/2 hour to do it. But I really don't feel that this is my problem. Mustanguy, it starts and Idles so good it isn't funny. It sounds tougher than Japanise arithmatic. It has no power, and will not hardly rev passed 2000rpm.