# HKS step 1 cams

**URL:** <https://forums.speedlife.net/t/hks-step-1-cams/105831>\
**Category:** SON240sx Automotive\
**Created:** [April 23, 2007, 1:18pm UTC](https://forums.speedlife.net/t/hks-step-1-cams/105831 "2007-04-23T13:18:45Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![Happy240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/happy240sx/32/5515_2.png) [@Happy240sx](https://forums.speedlife.net/u/Happy240sx)\
**Post date:** [April 25, 2007, 4:55am UTC](https://forums.speedlife.net/t/hks-step-1-cams/105831/10 "2007-04-25T04:55:42Z")

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> [@WTB .. tires](https://forums.speedlife.net/t/wtb-tires/12016/5):
>
> Whats the best way to tune for these cams. Start with the idel and work my way from there, try to get the a/f to around 14.7 ?

You’ll have a tough time getting them to idle nicely at 14.7. You will probably need to bump your idle to 1000-1100 rpm.

As for 14.7, there are only a few spots in your map where you will actually want to be at 14.7 (or leaner) and that is cruise and idle. Do not attempt to tune your car to 14.7 under heavy throttle

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