Carb to efi

Foxtoslow89

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Nov 16, 2012

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Nov 16, 2012

#1

• Nov 16, 2012

• #1

Hey guys I'm knew to the forums. Hope I can get some help, I have a 89 foxbody originally a five speed efi car until I put a 460 in her, I went back to a 5.0 and ran a carb for a while, now I'm going back efi and I just got a computer engine harness Maf harness injecter harness, and I wanna know what I need at bare minimum to get it running. I have a custom harness in it now that has it's own fuse box, ignition ect. Please let me know if anyone has any answers for me

 

Noobz347

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Nov 17, 2012

#2

• Nov 17, 2012

• #2

Moved to 5.0 tech.

 

MikeH686

Mine is only two inches though.

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Nov 17, 2012

#3

• Nov 17, 2012

• #3

Check out rjm injection tech their harness will get you running minus things like sensors computers and o2 sensors

 

jrichker

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Nov 18, 2012

#4

• Nov 18, 2012

• #4

eBay - look for an 89 model 5.0 Mustang EFI harness. They do pop up from time to time.
As of noon Sunday, 18 Nov,2012 there are 4 available. See http://www.ebay.com/sch/i.html?_trk...89+Mustang+5.0+EFI+harness&_sacat=0&_from=R40

 

MikeH686

Mine is only two inches though.

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Nov 18, 2012

#5

• Nov 18, 2012

• #5

I aactually have one in fair condition if you want it ill sell it to you for 160 plus shipping just needs a computer

 

MikeH686

Mine is only two inches though.

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Nov 18, 2012

#6

• Nov 18, 2012

• #6

Nevermind i forgot our years wont be interchangeable

 

Foxtoslow89

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Nov 16, 2012

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Nov 18, 2012

#7

• Nov 18, 2012

• #7

i already have the 89 harness and computer that i just got.. Now i just need to install it but i wanna no what i can get away with not pluging in. i just want too hook up as bare minimum as i can?

 

MikeH686

Mine is only two inches though.

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#8

• Nov 18, 2012

• #8

Tab tad egr uhm i cant remember what else

 

Foxtoslow89

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Nov 16, 2012

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Nov 18, 2012

#9

• Nov 18, 2012

• #9

rjm gave me a great perspective thanks

 

MikeH686

Mine is only two inches though.

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#10

• Nov 18, 2012

• #10

Yeah no problem glad to help when i can

 

Foxtoslow89

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Nov 19, 2012

#11

• Nov 19, 2012

• #11

I do have some more questions on my build. Got a 311( 302 60 over). Gt40p heads ported. Will a stock upper and lower intake work ok for me just to get her running decent. And also I was wanting to do a turbo, nothing craZy just something to give her that little pull any opinions on my options??

 

MikeH686

Mine is only two inches though.

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Nov 19, 2012

#12

• Nov 19, 2012

• #12

I mean you should go to the junkyard and get an explorer intake it willl be better then stock and not be much money for the turbo kit for cheap go with on3 performance but if you would want to piece better quality components check out www.bgturbokits.com

 

ratio411

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Nov 19, 2012

#13

• Nov 19, 2012

• #13

The stock intake setup will work fine until you decide what you want for your final setup....
However, with Explorer GT40 intakes being so common and cheap in the upulls, it couldn't hurt to grab one and use it.
They are far and away better than stock, even if there are some aftermarket intakes that are better...
Get the upper, lower, and TB (throttle body)...

 

MikeH686

Mine is only two inches though.

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#14

• Nov 19, 2012

• #14

This ans hwy ratio411 can you help me with this rjm kit?

 

ratio411

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#15

• Nov 19, 2012

• #15

MikeH686 said:

This ans hwy ratio411 can you help me with this rjm kit?

Click to expand...

What do you need?
I have used the "universal" 5.0 kit to install an EFI 5.0 in place of a carb'd I6 in a Fox body Fairmont (same as Mustang, but for 5" longer).
It was easy-cheezy. Every wire in the harness is marked down it's entire length as to what it is.
I am going to use one in my 87 GT just to get rid of the rough stock harness, and make for an easy MAF upgrade.
It only includes the wires you need, and not the extras that come stock... emissions and such.

 

Foxtoslow89

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Nov 19, 2012

#16

• Nov 19, 2012

• #16

What would you say about gasket matching the stock lower and upper? Or should I just get the gt40 upper and lower with the 24 lbs inj. And mass air? My gt40p heads are ported and polished and I'm not sure how good 19lbs inj. Will work with my 311?

 

ratio411

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Nov 19, 2012

#17

• Nov 19, 2012

• #17

Foxtoslow89 said:

What would you say about gasket matching the stock lower and upper? Or should I just get the gt40 upper and lower with the 24 lbs inj. And mass air? My gt40p heads are ported and polished and I'm not sure how good 19lbs inj. Will work with my 311?

Click to expand...

What I understand is that the 19s will handle up to 300hp, then you pretty much need 24s.
I also understand that the stock MAF setup will run 24s without issue, but for anything larger you need calibration.
I doubt you'll need 24s with a stock upper/lower intake. I don't know if they are good for 300 hp in any combo?
Someone else might have to chime in on that.

 

Foxtoslow89

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Nov 16, 2012

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Nov 19, 2012

#18

• Nov 19, 2012

• #18

well ill be honest, just with my 311 and built gt40p heads ill be 300+ so it looks like gt40 is looking a little better at this point then the stock

 

MikeH686

Mine is only two inches though.

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Nov 19, 2012

#19

• Nov 19, 2012

• #19

Ill have to look but are the instructions easy to understand i just have mine laid out in the bay

 

ratio411

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#20

• Nov 19, 2012

• #20

MikeH686 said:

Ill have to look but are the instructions easy to understand i just have mine laid out in the bay

Click to expand...

I thought it was easy-cheezy.
Between the instructions and everything being labeled, not to mention the plugs only fitting exactly what they are supposed to fit, I don't think it could get much easier.