# Honda DOHC ZC Question...

**URL:** <https://forums.speedlife.net/t/honda-dohc-zc-question/180372>\
**Category:** PittSpeed Automotive\
**Created:** [February 19, 2006, 9:45am UTC](https://forums.speedlife.net/t/honda-dohc-zc-question/180372 "2006-02-19T09:45:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![swartzz](https://avatars.discourse-cdn.com/v4/letter/s/ecccb3/32.png) [@swartzz](https://forums.speedlife.net/u/swartzz)\
**Post date:** [February 19, 2006, 9:45am UTC](https://forums.speedlife.net/t/honda-dohc-zc-question/180372/1 "2006-02-19T09:45:19Z")

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Is there an extra sensor on a DOHC Intake manifold that is not on an Si Manifold? I have an extra sensor that is not plugged in that I am unsure of. Is there a different manifold for autos vs. 5-speeds? I know the DOHC ZC engine that I have was from an auto. Please help. Thanks.