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Help with MAF Conversion

  • Thread starter Thread starter dusty58
  • Start date Start date Nov 25, 2009
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dusty58

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Nov 8, 2009
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Nov 25, 2009
#1
  • Nov 25, 2009
  • #1
I have a '86 H.O. with speed density and I'm trying to convert to MAF. Question is I want to put a Granatelli ECM designed for a 89-93 along with the MAF conversion harness. Is the original harness gonna plug in fine or will there need to be mods? Also, weren't the stock injectors 19lb on 89-93?
 

jrichker

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#2
  • Nov 26, 2009
  • #2
Save your money, use a 70 MM MAF from a 94-95 Mustang V6 or V8 (same MAF).
The stock injectors were 19 Lb units anfd they are good to 270 Flywheel HP with a good safety factor.

94-95 Mustang GT MAF - $40-$100. It is 70 MM instead of the stock 55 MM on regular stangs built prior to 94. It uses a slip on duct on the side that goes to the throttle body and a 4 bolt flange on the other. You need a flange adapter to fit the stock slip on air ducting that goes to the air box. Wiring plugs right in with no changes. *1 *2


*1.) Metal flange adapter Kurtz Kustomz Motorsports, Inc. KKM Buy the TR70 for $44.95. Or spend some time on eBay looking for one that may fit.
Try AutoZone and ask for 81413 - Spectre / 3 in. Aluminum Intake Mass Air Flow Sensor Adapter at $12.00. You may have to order it online.

*2.) MAF & sensor interchange
The 94-95 Mustang 5.0 MAF & sensor is also found on:
1994-95 Mustang 3.8L F2VF-12B579-A2A,
1992-94 Crown Victoria 4.6L F2VF-12B579-A2A,
1994-95 Mustang, Mustang Cobra 5.0L F2VF-12B579-A2A,
1992-94 Town Car 4.6L F2VF-12B579-A2A,
1992-94 Grand Marquis 4.6L F2VF-12B579-A2A,
Evidently the –A1A, -A2A, AA, etc. on the end of the part number is a minor variant that did not change the operating specs. You should be able to ignore it and have everything work good.
 
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