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Thread: MK8 and mass air sensor tied to an a9p eec

  1. #11
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    wow,, found the company that made our other PMAS from the picture above,,,, up in ohio.

    here is the equal rendition to their plug and play no tuning required mass air sensor..

    http://www.pmas-maf.com/product/mh80...jectors-black/

    105$

  2. #12
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    I had the PMAS one you linked. It did not want to play nice without a tune.

    This is plug and play with a stock airbox: https://lmr.com/item/PMA-12579AE/198...Meter-For-24Lb

    As a FYI 24lb injectors are probably small for a 331 (even though you are using GT40 heads). My 306 ended up needing 30lb injectors as it was running low on fuel above 5200rpm. The 24lb injectors couldn't keep up.
    '88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, Edelbrock 70mm TB, 76mm C&L MAF, 30lb injectors, 2.5" exhaust, AOD with 2800 PI converter, 8.8 with 3.73 gears, 31 spline Traction-Lok, 31 spline Moser axles, 04 Cobra front arms, Maximum Motorsports extreme duty rear arms, subframes.
    '11 Focus, '12 Mustang 3.7, '17 Accord EX-L V6

  3. #13
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    Hey Scott.... It looks like C&L are out of business. I assume the ones on American Muscle are china clones and it appears MAC is making something similar. Either way you would still need the stock electronics from an 89-93 gt/lx Mustang.

    https://www.shop.macperformance.com/...ter-MA7386.htm
    https://www.americanmuscle.com/cnl-73maf-8693gt.html

    John

  4. #14
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    Quote Originally Posted by thunderjet302 View Post
    As a FYI 24lb injectors are probably small for a 331 (even though you are using GT40 heads). My 306 ended up needing 30lb injectors as it was running low on fuel above 5200rpm. The 24lb injectors couldn't keep up.
    wha???
    24's too small for a 306?
    that means 24's are wayyyyy to small for me yet summit / others said they will work fairly spot on with my small ho cam???

    based on what you have experienced, that means i need bigger than 30lb injectors,,

    stock 302 bird 14# injector, for each cylinder of 37.75cu in of displacement = about .37lb of fuel per cu in.
    your 306 with 24lb inj = .675lb per cube
    you upgraded to 30lb inj, thats about .78lb per cub

    since i am a .030 over 331, for easy math thats about a 350cu in,,,, and if i use .675 per cube,,, thats about 30# injector need??

    was your maf plug and play or did you tune?
    or did you let the eec learn?

  5. #15
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    Quote Originally Posted by Skunk View Post
    Hey Scott.... It looks like C&L are out of business. I assume the ones on American Muscle are china clones and it appears MAC is making something similar. Either way you would still need the stock electronics from an 89-93 gt/lx Mustang.

    https://www.shop.macperformance.com/...ter-MA7386.htm
    https://www.americanmuscle.com/cnl-73maf-8693gt.html

    John
    when you say stock electronics,, you mean the eec ,, correct?

  6. #16
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    also,
    if i change to 30# injectors will the a9l or a9p eec be able to manage them?

    i know they are low resistance injectors,,,,

    the CFI 3.8L are high resistance but are 34# (green tops) which i have a couple dozen of).
    i also have a dozen CFI 5.0L 54lb which are also high resistance but what i have seen is the sefi 5.0,, all the injectors are low resistance.

  7. #17
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    Quote Originally Posted by jcassity View Post
    when you say stock electronics,, you mean the eec ,, correct?
    No, I mean the from the MAF sensor.

    John

  8. #18
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    Quote Originally Posted by jcassity View Post
    also,
    if i change to 30# injectors will the a9l or a9p eec be able to manage them?

    i know they are low resistance injectors,,,,

    the CFI 3.8L are high resistance but are 34# (green tops) which i have a couple dozen of).
    i also have a dozen CFI 5.0L 54lb which are also high resistance but what i have seen is the sefi 5.0,, all the injectors are low resistance.
    A9* all require High Z and as long as you have a MAF calibrated for 30 or whatever you end up running you should be able to manage.

    John

  9. #19
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    Quote Originally Posted by Skunk View Post
    No, I mean the from the MAF sensor.

    John
    reword pls

    you mean -use a stock stang mass air sensor?

  10. #20
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    Quote Originally Posted by jcassity View Post
    reword pls

    you mean -use a stock stang mass air sensor?
    I mean the electronics from the stock MAF get installed on the new housing if you go the sample tube MAF housing direction.

    Just reading Thunderjets posts....he brings up a good point about needing larger injectors. Yes the 24s will work fine up to around 300 hp. The problems arise at high RPM where there isn't enough time to squirt into the cylinder due to cam events. This is where you need a larger injector to deliver more fuel in less time.

    John

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