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4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

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Old 08-15-2009, 11:52 PM   #1
sptdexs
 
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Default horsepower gain

So i just bought a ford racing PI intake manifold, high flow fuel rails, 30lb fuel injectors, and a ford racing mass air flow sensor. what kind of horse power should i expect without a custom tune, and how much more will i get once i do get a dyno tune?
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Old 08-15-2009, 11:53 PM   #2
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o and its a 2000 mustang gt
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Old 08-16-2009, 12:54 AM   #3
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im not for sure on numbers but go with a tuner instead of a dyno tune. the tuner can change as you put new parts on, just update the tune on the car as new parts come. a dyno will only be set with the parts listed. as you get new parts, you will have too redyno. i enjoy my sniper tuner but there are others out there. just are around this forum, ppl will suggest what they feel they like
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Old 08-16-2009, 01:00 AM   #4
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Are you N/A? Why such big injectors?
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Old 08-16-2009, 01:02 AM   #5
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lol your not doing anything for a performance gain. All your doing is putting way bigger injectors than you need.
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Old 08-16-2009, 01:12 AM   #6
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dont you already have a PI intake ?
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Old 08-16-2009, 01:12 AM   #7
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thanks for the advice, i changed my order to 24 lbs injectors(lowest ones at AM)
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Old 08-16-2009, 01:29 AM   #8
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01-03 mustang gt's have the PI intake stock. I don't think you'll get much of a hp gain from the intake manifold. Don't waste your money.

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Old 08-16-2009, 01:38 AM   #9
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lmao i didn't even catch that, you realize you're just buying a replica of the intake on your car right?

if yours isn't cracked i hope u didnt order it lol.
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Old 08-16-2009, 01:41 AM   #10
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its is cracked
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Old 08-16-2009, 01:41 AM
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