# Getting Tuned During Winter Months

**URL:** <https://forums.speedlife.net/t/getting-tuned-during-winter-months/248924>\
**Category:** Shift518 Automotive\
**Created:** [December 8, 2009, 8:19pm UTC](https://forums.speedlife.net/t/getting-tuned-during-winter-months/248924 "2009-12-08T20:19:29Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![Auto0utcast1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/auto0utcast1/32/6546_2.png) [@Auto0utcast1](https://forums.speedlife.net/u/Auto0utcast1)\
**Post date:** [December 8, 2009, 9:09pm UTC](https://forums.speedlife.net/t/getting-tuned-during-winter-months/248924/15 "2009-12-08T21:09:57Z")

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> [@Running 8 ohm speakers on a 4 ohm amp?](https://forums.speedlife.net/t/running-8-ohm-speakers-on-a-4-ohm-amp/27010/7):
>
> full boost at what rpm

18psi by 34-3600 maybe earlier. peak tq 750-1000 rpms after that.

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