Twin Turbo 2V Holley Dominator - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 14 Old 03-06-2016, 11:31 AM Thread Starter
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Twin Turbo 2V Holley Dominator

I bought the setup at the end of last year while Holley had a sale going.
Bought it from JPC racing and they provided me with a startup tune with my injector info loaded.

The harnesses are all plug n play with labels.



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post #2 of 14 Old 03-06-2016, 04:48 PM
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Nice. I am using the hp on my single turbo 5.4L 2v. Pretty slick install and not too hard to use . How's it working for you?


1998 Mustang GT - 5.4L 2 Valve w/BW S475 turbo
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post #3 of 14 Old 03-06-2016, 05:12 PM Thread Starter
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This is where I mounted it.

Mounted the 5.7" holley touch screen here.


I left the stock computer in the car. I have all the stock gauges working except the oil pressure and coolant temperature. The holley harness plugged into everything except you have to use a different oil pressure and fuel pressure transducer.
I used two of these 100psi transducers.
Stainless Steel Different Pressure Transducer or Sender for Oil Fuel Air Water | eBay

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post #4 of 14 Old 03-06-2016, 07:18 PM
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Are you still running the MAF with that system?


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Kevin Slaby
2002 GT 2V 902hp/820tq through the muffs.
http://baselinesuspensions.com/Projects/balrog.htm
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post #5 of 14 Old 03-06-2016, 08:11 PM Thread Starter
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No, it does not use it. It's speed density.
You can also change the tune in real time with the 5.7" touch screen.



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post #6 of 14 Old 03-06-2016, 11:40 PM
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I can't wait to see how you like it given more time with it. It'll be interesting to hear your thoughts on the performance afterwards.

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2002 GT 2V 902hp/820tq through the muffs.
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post #7 of 14 Old 03-08-2016, 06:34 AM
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Looks nice, I wish I would have gone with this or MS.
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post #8 of 14 Old 03-08-2016, 10:34 PM Thread Starter
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Holley sells a main engine harness for the modular engines. It just plugs into all the stock locations. You have to use new 100psi sensors for oil and fuel pressure harness.
The harness doesnt have provision for the stock fan or the alternator. The alternator wiring harness separates from the main engine harness. I then plugged it into the stock locations. Holley has input/output harnesses that you can connect to many different things so that you can program holley to control. I used one of the output wires to power a relay which turns the fan on/off. My fuel pumps still worked when I turned my key on so didnt have to change anything there. Now to the stock starter switch.
Under the dash you remove the panels to get to the ignition switch harness. I cut the white/pink strip wire. Coming from the switch side of the cut wire I connected in a new wire and ran it out to the driver side. I connected to the ignition wire that run to the starter. That allowed the stock switch to start it.

I cut up the stock harness. The section that goes to the transmission separates from the main harness. I plugged it back in and got my stock speedometer to work. I left the crank sensor wire attached to the main plug. I spliced it into the holley crank sensor wire. Bolted it back to the main plug and now my stock tach also works. I turned off all the switches in the tune but the check engine still comes on. I will likely just remove the check engine bulb.

[/QUOTE]

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post #9 of 14 Old 03-09-2016, 10:12 PM
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Great write up. Thanks for sharing. Did you delete the stock injector harness?
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post #10 of 14 Old 03-09-2016, 10:44 PM Thread Starter
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Yes. I used the stock alternator and transmission harness. They separate from the main harness. I cut every wire from the main harness except the crank sensor wire. It's on the right side in the pic above.
Installed a set of Holley 120lb injectors.



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post #11 of 14 Old 03-09-2016, 10:53 PM
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So what are your new goals?

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post #12 of 14 Old 03-09-2016, 11:20 PM Thread Starter
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Running in the 9's on low boost will make me happy.
Moved my shifter.

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post #13 of 14 Old 03-18-2016, 08:36 PM
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How do you like the Holley 120# injectors?
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post #14 of 14 Old 03-18-2016, 09:57 PM Thread Starter
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I dont have very much run time on them yet, but have no issues with them.

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