# question for subie guys..

**URL:** <https://forums.speedlife.net/t/question-for-subie-guys/248697>\
**Category:** Shift518 Automotive\
**Created:** [November 29, 2009, 8:54pm UTC](https://forums.speedlife.net/t/question-for-subie-guys/248697 "2009-11-29T20:54:52Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![cazwrx187](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cazwrx187/32/6388_2.png) [@cazwrx187](https://forums.speedlife.net/u/cazwrx187)\
**Post date:** [November 30, 2009, 2:05pm UTC](https://forums.speedlife.net/t/question-for-subie-guys/248697/8 "2009-11-30T14:05:45Z")

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> [@23pics of a NewEra 850whp Z06](https://forums.speedlife.net/t/23pics-of-a-newera-850whp-z06/26520/18):
>
> Ok, I understand the why. But now I would like to know how that works mechanically. If the entire AWD system is connected mechanically, how does a simple circuit allow you to stop sending power to the rear wheels?

I’m pretty sure, don’t quote me, the center diff in the 04 sti is controlled electronically. It will also open when the clutch is pushed in and the e-brake is pulled, so you don’t fry the center diff. Also helps with rally style e-brake initiated turns.

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