Engine Adjustable MAF ????

Mr.Kelley

Active Member

Aug 9, 2019

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San Diego Ca

Apr 16, 2021

#1

• Apr 16, 2021

• #1

So I'm researching trying to tune my Fox MAF running the 2000ish Explorer induction and fuel system, and I found this http://mass-air.com/Products.htm


Any thoughts from the experts and peanut gallery.

 

7991LXnSHO

wanna catch the space herp

10 Year Member

Sep 1, 2010

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Kearney, NE

Apr 16, 2021

#2

• Apr 16, 2021

• #2

The peanut gallery has spoken.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Apr 17, 2021

#3

• Apr 17, 2021

• #3

I don’t believe that part was very popular. You’d need a wide band to “tune” it and it would be a steep learning curve.

what issues are you having? I ran an SN95 70mm MAF with 19s and cobra intake (similar to explorer) and it ran beautifully without any tune

 

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Mr.Kelley

Active Member

Aug 9, 2019

194

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San Diego Ca

Apr 17, 2021

#4

• Apr 17, 2021

• #4

I'm running the stock 2000ish explorer intake, TB, orange injectors, returnless fuel rail, and fuel pump. no EGR or air pump. Stock Foxbody MAF. Iron Exh Manifolds into singled 2" exhaust. Runs rich, how rich I don't know but it's stinky. Idles ok but if I get in heavy stop and go traffic it loads up. Accelerates and cruises good but I think it should do better than 17mpg pushing a 2200# car down the freeway. I don't think I can run an explorer MAF on the Fox ECU. Would the SN95 MAF get me closer.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,154

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Massachusetts

Apr 17, 2021

#5

• Apr 17, 2021

• #5

No, you cannot use the explorer MAF. What are you using now for a maf?

you can use. 94-95 SN95 MAF with an A9L. Is this the ECU you are using?

 

Mr.Kelley

Active Member

Aug 9, 2019

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San Diego Ca

Apr 17, 2021

#6

• Apr 17, 2021

• #6

The MAF and ECU I got along with the Painless harness. The MAF is an 87-90 Fox. The ECU is an 8LD which is a CA Emissions A9L. If I use the SN95 are they all the same, or do I have to find a Cobra one.

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

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polk county florida

Apr 17, 2021

#7

• Apr 17, 2021

• #7

What's your fuel pressure?

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,154

17,844

224

Massachusetts

Apr 17, 2021

#8

• Apr 17, 2021

• #8

Your setup should run fine as it is. Something else is amiss. Have you dumped codes?

 

HemiRick

I'd be looking at jacking under the house

Jun 28, 2020

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Memphis TN

Apr 17, 2021

#9

• Apr 17, 2021

• #9

orange injectors are 22 lb. stock MAF is set for 19 lb. thats why you're rich.

 

Mr.Kelley

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San Diego Ca

Apr 19, 2021

#10

• Apr 19, 2021

• #10

HemiRick everything I can find says orange is 19# I am running the explorer skinny injectors but I do have a set of the fat orange Mustang injectors. Do you think switching to those would help me out. I am going to check codes a little later today. I'll get back if there are any.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,154

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Massachusetts

Apr 19, 2021

#11

• Apr 19, 2021

• #11

The orange explorer injectors are also 19# with a better spray pattern. They should work fine

 

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Mr.Kelley

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Aug 9, 2019

194

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San Diego Ca

Apr 19, 2021

#12

• Apr 19, 2021

• #12

I pulled codes and got a 33 - EGR open not detected. With no EGR this is expected. I do need to go for a short drive and get it up to temp and repull.

 

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Mr.Kelley

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San Diego Ca

Apr 26, 2021

#13

• Apr 26, 2021

• #13

OK so I don't have any codes pointing to a problem that would cause a rich situation. I have a slightly larger throttle body and a better flowing intake with 19# injectors. If I get the SN95 MAF do you guys think it would match better than the earlier one I'm running now. I can get a reman one from the parts store with a lifetime warranty for $70.

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,154

17,844

224

Massachusetts

Apr 26, 2021

#14

• Apr 26, 2021

• #14

Foxbody MAF vs the 94-95 MAF should not make any noticeable difference . One is 55mm the other is 70mm. The transfer curves are close enough that the car should run exactly the same. I don’t think it will solve your issue

 

Mr.Kelley

Active Member

Aug 9, 2019

194

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San Diego Ca

May 12, 2021

#15

• May 12, 2021

• #15

I found my runs rich issue. As stated earlier I'm running stock 2000ish Explorer intake and fuel system. A quick google search says 2000 Explorer fuel pressure is 60 psi an actual working gauge says 62psi. 88 Mustang fuel pressure is 40psi. The Explorer fuel pump has an inline regulator right above the pump in the tank it dumps the excess before leaving the tank. Does anybody make a 40psi inline regulator for a returnless system.

 

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