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Secondary Injectors

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Old 06-09-05, 07:38 PM
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Secondary Injectors

Okay, I searched, and looked through the FAQs, and came up with nothing.

Which of the four injectors are the secondary injectors? I've looked through numerous posts, as well as all the sites in the FAQ. If anyone has pics, they'd be helpful as well. Thanks!
Old 06-09-05, 07:39 PM
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On a TII, they are the top two, and you should be able to see one by the UIM.
Old 06-09-05, 07:40 PM
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So they're actually higher than the primary injectors?
Old 06-09-05, 07:43 PM
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Originally Posted by DylanShupe
Okay, I searched, and looked through the FAQs, and came up with nothing.

Which of the four injectors are the secondary injectors? I've looked through numerous posts, as well as all the sites in the FAQ. If anyone has pics, they'd be helpful as well. Thanks!

The secondary injectors are on the upper section of the upper intake manfold. They are the only injectors on the intake manfold. The two primary are bolted to the block. Usually if your upgrading your injectors the secondary have a higher flow rate. The secondary injectors only turn on after 3800 RPM or so under the stock ecu.
Old 06-09-05, 07:46 PM
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Originally Posted by Curtisleeyoung
The secondary injectors are on the upper section of the upper intake manfold. They are the only injectors on the intake manfold. The two primary are bolted to the block. Usually if your upgrading your injectors the secondary have a higher flow rate. The secondary injectors only turn on after 3800 RPM or so under the stock ecu.
I knew about where they came on and stuff...I just wasn't sure about the location. Thanks anyway though! Good to see people who know their stuff.
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