# throttle body before a turbo?

**URL:** <https://forums.speedlife.net/t/throttle-body-before-a-turbo/44191>\
**Category:** NYSpeed Automotive\
**Created:** [February 29, 2008, 6:45am UTC](https://forums.speedlife.net/t/throttle-body-before-a-turbo/44191 "2008-02-29T06:45:09Z")\
**Posts on this page:** 1\
**Showing post:** 22

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**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\
**Post date:** [February 29, 2008, 12:45pm UTC](https://forums.speedlife.net/t/throttle-body-before-a-turbo/44191/22 "2008-02-29T12:45:51Z")

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> [@newman](#):
>
> this is called PUMP CAVITATION

> **[Cavitation 1-3 – McNally Institute](https://www.mcnallyinstitute.com/01-html/1-3.html)**

Liquid based, but same concept.

as for the edit:

> [@newman](#):
>
> the maf should read the same voltage on either side of the compressor, but depending on the proximity to the throttlebody, you can develop pressure waves traveling in the opposite direction of the airflow which will disrupt the reading.

yea, i would’ve thought density change from ambient (pre compressor) to compressed (post compressor) to compressed & cooled (post comp & IC) would make for differences, no?

> [@newman](#):
>
> 300zx & skyline & subarus are all draw through setups.

OIC

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