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Old 10-10-2009, 10:07 AM   #1
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Throttle body swap

When you put a 4.0 TB on a 2.5L, do you use the same sensors that are on the 4.0 TB? Do you have to swap them out? Or just install the 4.0 and go?
Thx for any responses

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Old 10-12-2009, 03:57 PM   #2
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need to you use the sensors from the 2.5L TB.

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Old 10-12-2009, 07:42 PM   #3
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I used a TB from a 5.9L Dodge on my 01' Laredo 4.7L. It was a plug and play install. Went from 60mm to 70mm. When you get done let us know how you like or don't like it. And I will let you know how mine works.
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Old 10-12-2009, 08:53 PM   #4
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Sounds good, thanks for the info
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Old 10-12-2009, 08:55 PM   #5
Knows a couple things...

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Jp Magazine tried installing a 4.0L TB onto a 2.5L engine several years ago and noticed no performance gain. In fact, they commented there might have even been a little bit of a loss in performance.
When you have a choice, buy American.

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Old 10-12-2009, 09:00 PM   #6
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Who did the install? Bree?
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Old 10-12-2009, 09:01 PM   #7
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IMO throttle body swaps and trottle body spacers are wasted money.
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Old 10-12-2009, 09:09 PM   #8
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I just bought another jeep and it has a TB spacer installed. It is coming off!

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