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throttle body spacer for 4.9l EFI motor

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Old 04-02-2008, 03:01 AM   #1
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Default throttle body spacer for 4.9l EFI motor

i got a question for anyone that can answer it....i want to buy a throttle body space for my 4.9l motor and was wondering if i swap the throttle body (1inch opening) for the larger throttle body off a 5.0l efi would it be a direct bolt on or would it cause problems with the computer?.
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Old 04-02-2008, 08:25 AM   #2
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Are you asking about 2 different parts or just one??
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Old 04-02-2008, 11:18 PM   #3
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im asking about buying a spacer but i aslo want to change the smaller throttle body for the larger one on the v8's and was wondering if there are any affects to the ecm?
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Old 04-03-2008, 09:40 AM   #4
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From my experience it will affect the ECU and you don't need or will pick up any gains with a TB spacer or larger TB ( on a stock vehicle). I went through all that on my old 89 LX Mustang.

Last edited by JohnC; 04-04-2008 at 10:17 AM.
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